The property of a body by which it resists any change in the state of rest or uniform motion in a straight line is called inertia. Inertia is a fundamental concept in physics, described by Newton's first law of motion. It implies that an object will remain at rest or continue moving with constant veRead more
The property of a body by which it resists any change in the state of rest or uniform motion in a straight line is called inertia. Inertia is a fundamental concept in physics, described by Newton’s first law of motion. It implies that an object will remain at rest or continue moving with constant velocity unless acted upon by an external force. This property arises from the mass of the object, where larger masses exhibit greater inertia. It is a key principle in understanding the behavior of objects in motion and is applied across various fields of physics, from mechanics to astrophysics. Options [A] Immobility and [C] Total weight are not accurate descriptions of this property. While option [D] Inertia may seem redundant, it correctly identifies the property being described, making it the correct answer. Therefore, the correct answer is [D] Inertia.
Swimming in water is possible due to Newton's third law of motion. This law states that for every action, there is an equal and opposite reaction. When a swimmer pushes against the water with their arms and legs (action), the water pushes back with an equal and opposite force (reaction). This reactiRead more
Swimming in water is possible due to Newton’s third law of motion. This law states that for every action, there is an equal and opposite reaction. When a swimmer pushes against the water with their arms and legs (action), the water pushes back with an equal and opposite force (reaction). This reaction force propels the swimmer forward through the water. Newton’s first law of motion, also known as the law of inertia, describes the tendency of objects to remain at rest or in uniform motion unless acted upon by an external force. Newton’s second law of motion relates force, mass, and acceleration, describing how the force applied to an object affects its motion. While both laws are relevant in understanding swimming mechanics, it is primarily Newton’s third law that directly explains the propulsion achieved by swimmers through action and reaction forces with the water. Therefore, the correct answer is [C] Third law.
For every action, there is a reaction in equal and opposite direction. This is called Newton's third law of motion. It states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object. This law is fundamental in understanding theRead more
For every action, there is a reaction in equal and opposite direction. This is called Newton’s third law of motion. It states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object. This law is fundamental in understanding the interactions between objects in nature, such as the propulsion of rockets, the tension in a rope, or the recoil of a gun. Newton’s first law of motion, also known as the law of inertia, describes the tendency of objects to maintain their state of motion unless acted upon by an external force. Newton’s second law of motion relates the force applied to an object, its mass, and its resulting acceleration. However, neither of these laws specifically addresses the concept of action and reaction pairs as Newton’s third law does. Therefore, the correct answer is [C] Newton’s third law of motion.
According to Newton's third law of motion, the forces related to action and reaction can be applied on different objects. This fundamental law states that for every action, there is an equal and opposite reaction. As a result, the forces act on different objects, not necessarily the same one. For exRead more
According to Newton’s third law of motion, the forces related to action and reaction can be applied on different objects. This fundamental law states that for every action, there is an equal and opposite reaction. As a result, the forces act on different objects, not necessarily the same one. For example, when a person pushes against a wall, they exert a force on the wall (action), and in return, the wall exerts an equal and opposite force on the person (reaction). These forces act on different objects, highlighting the principle of action-reaction pairs. Therefore, option [B] can be applied on different objects accurately describes this aspect of Newton’s third law. This law is fundamental in understanding interactions between objects and forms the basis for various phenomena observed in mechanics, such as propulsion, friction, and collisions.
The acceleration produced in a body by an unbalanced force is directly proportional to the force. This principle is articulated in Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mRead more
The acceleration produced in a body by an unbalanced force is directly proportional to the force. This principle is articulated in Newton’s second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In mathematical terms, F = ma, where F is the force applied, m is the mass of the object, and a is the acceleration produced. This relationship implies that as the force acting on an object increases, the acceleration it experiences also increases, assuming the mass remains constant. Therefore, the correct answer is [B] directly proportional to force, as per the fundamental principles of Newtonian mechanics. This relationship is foundational in understanding the dynamics of motion and the effects of forces on objects.
The statement describes Newton's first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects reRead more
The statement describes Newton’s first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects resist changes in their state of motion. Newton’s second law of motion, on the other hand, describes the relationship between force, mass, and acceleration. Newton’s third law of motion deals with action and reaction pairs, stating that for every action, there is an equal and opposite reaction. Galileo’s law of motion is not a recognized scientific term. Therefore, the correct answer is [A] Newton’s first law of motion, which succinctly captures the concept of inertia in the absence of external forces.
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depenRead more
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depending on the gravitational field strength. Therefore, mass remains constant, while weight changes with location. This distinction is crucial in physics as it affects how objects behave under different conditions. Option [B] Mass remains constant, while weight is variable accurately describes this difference, aligning with the fundamental principles of physics. Hence, option [C] Both are true is incorrect, as mass is not variable, and weight is not constant. Similarly, option [D] Both are false is also inaccurate, as the statements in option [B] are indeed true.
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional toRead more
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional to the square of the velocity. Acceleration, on the other hand, remains unaffected by changes in velocity unless there’s an external force acting upon the object. Weight, a measure of gravitational force acting on an object’s mass, is unrelated to changes in velocity alone. Therefore, it doesn’t double when velocity doubles. Thus, the correct answer is [C] Kinetic energy quadruples. This relationship between velocity and kinetic energy is fundamental in understanding the dynamics of moving objects and is applicable across various physical scenarios, regardless of specific object characteristics.
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torqueRead more
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torques, the angular velocity must decrease to compensate for the increased moment of inertia. This phenomenon is akin to an ice skater extending their arms to slow down their spin while conserving angular momentum. Hence, the correct answer is [A] Will decrease. This effect is predictable based on fundamental principles of rotational motion and applies universally regardless of specific table or boy characteristics, making the change in angular velocity predictable and consistent.
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standinRead more
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standing, her center of mass rises, lengthening the pendulum and slowing down the swing’s period. This phenomenon is governed by the principle of conservation of energy and the relationship between potential and kinetic energy in a pendulum system. Regardless of the girl’s height, this change in the swing’s dynamics remains consistent. Therefore, the correct answer is [B] increase. The act of standing redistributes her mass, influencing the swing’s rhythm and extending the time taken for each oscillation.
What is called the property of a body by which it resists any change in the state of rest or uniform motion in a straight line?
The property of a body by which it resists any change in the state of rest or uniform motion in a straight line is called inertia. Inertia is a fundamental concept in physics, described by Newton's first law of motion. It implies that an object will remain at rest or continue moving with constant veRead more
The property of a body by which it resists any change in the state of rest or uniform motion in a straight line is called inertia. Inertia is a fundamental concept in physics, described by Newton’s first law of motion. It implies that an object will remain at rest or continue moving with constant velocity unless acted upon by an external force. This property arises from the mass of the object, where larger masses exhibit greater inertia. It is a key principle in understanding the behavior of objects in motion and is applied across various fields of physics, from mechanics to astrophysics. Options [A] Immobility and [C] Total weight are not accurate descriptions of this property. While option [D] Inertia may seem redundant, it correctly identifies the property being described, making it the correct answer. Therefore, the correct answer is [D] Inertia.
See lessSwimming in water is possible due to which Newton’s law of motion?
Swimming in water is possible due to Newton's third law of motion. This law states that for every action, there is an equal and opposite reaction. When a swimmer pushes against the water with their arms and legs (action), the water pushes back with an equal and opposite force (reaction). This reactiRead more
Swimming in water is possible due to Newton’s third law of motion. This law states that for every action, there is an equal and opposite reaction. When a swimmer pushes against the water with their arms and legs (action), the water pushes back with an equal and opposite force (reaction). This reaction force propels the swimmer forward through the water. Newton’s first law of motion, also known as the law of inertia, describes the tendency of objects to remain at rest or in uniform motion unless acted upon by an external force. Newton’s second law of motion relates force, mass, and acceleration, describing how the force applied to an object affects its motion. While both laws are relevant in understanding swimming mechanics, it is primarily Newton’s third law that directly explains the propulsion achieved by swimmers through action and reaction forces with the water. Therefore, the correct answer is [C] Third law.
See lessFor every action, there is a reaction in equal and opposite direction. This is called
For every action, there is a reaction in equal and opposite direction. This is called Newton's third law of motion. It states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object. This law is fundamental in understanding theRead more
For every action, there is a reaction in equal and opposite direction. This is called Newton’s third law of motion. It states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object. This law is fundamental in understanding the interactions between objects in nature, such as the propulsion of rockets, the tension in a rope, or the recoil of a gun. Newton’s first law of motion, also known as the law of inertia, describes the tendency of objects to maintain their state of motion unless acted upon by an external force. Newton’s second law of motion relates the force applied to an object, its mass, and its resulting acceleration. However, neither of these laws specifically addresses the concept of action and reaction pairs as Newton’s third law does. Therefore, the correct answer is [C] Newton’s third law of motion.
See lessAccording to Newton’s third law of motion, the forces related to action and reaction –
According to Newton's third law of motion, the forces related to action and reaction can be applied on different objects. This fundamental law states that for every action, there is an equal and opposite reaction. As a result, the forces act on different objects, not necessarily the same one. For exRead more
According to Newton’s third law of motion, the forces related to action and reaction can be applied on different objects. This fundamental law states that for every action, there is an equal and opposite reaction. As a result, the forces act on different objects, not necessarily the same one. For example, when a person pushes against a wall, they exert a force on the wall (action), and in return, the wall exerts an equal and opposite force on the person (reaction). These forces act on different objects, highlighting the principle of action-reaction pairs. Therefore, option [B] can be applied on different objects accurately describes this aspect of Newton’s third law. This law is fundamental in understanding interactions between objects and forms the basis for various phenomena observed in mechanics, such as propulsion, friction, and collisions.
See lessThe acceleration produced in a body by an unbalanced force is
The acceleration produced in a body by an unbalanced force is directly proportional to the force. This principle is articulated in Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mRead more
The acceleration produced in a body by an unbalanced force is directly proportional to the force. This principle is articulated in Newton’s second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In mathematical terms, F = ma, where F is the force applied, m is the mass of the object, and a is the acceleration produced. This relationship implies that as the force acting on an object increases, the acceleration it experiences also increases, assuming the mass remains constant. Therefore, the correct answer is [B] directly proportional to force, as per the fundamental principles of Newtonian mechanics. This relationship is foundational in understanding the dynamics of motion and the effects of forces on objects.
See lessThere is no change in the position and direction of any stationary or moving object unless there is an external force acting on it. This is
The statement describes Newton's first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects reRead more
The statement describes Newton’s first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects resist changes in their state of motion. Newton’s second law of motion, on the other hand, describes the relationship between force, mass, and acceleration. Newton’s third law of motion deals with action and reaction pairs, stating that for every action, there is an equal and opposite reaction. Galileo’s law of motion is not a recognized scientific term. Therefore, the correct answer is [A] Newton’s first law of motion, which succinctly captures the concept of inertia in the absence of external forces.
See lessThere is a difference between the mass and weight of a body because
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depenRead more
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depending on the gravitational field strength. Therefore, mass remains constant, while weight changes with location. This distinction is crucial in physics as it affects how objects behave under different conditions. Option [B] Mass remains constant, while weight is variable accurately describes this difference, aligning with the fundamental principles of physics. Hence, option [C] Both are true is incorrect, as mass is not variable, and weight is not constant. Similarly, option [D] Both are false is also inaccurate, as the statements in option [B] are indeed true.
See lessIf the velocity of a moving object is doubled, its
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional toRead more
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional to the square of the velocity. Acceleration, on the other hand, remains unaffected by changes in velocity unless there’s an external force acting upon the object. Weight, a measure of gravitational force acting on an object’s mass, is unrelated to changes in velocity alone. Therefore, it doesn’t double when velocity doubles. Thus, the correct answer is [C] Kinetic energy quadruples. This relationship between velocity and kinetic energy is fundamental in understanding the dynamics of moving objects and is applicable across various physical scenarios, regardless of specific object characteristics.
See lessSuddenly a boy comes and sits on a rotating round table, what will be the effect on the angular velocity of the table?
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torqueRead more
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torques, the angular velocity must decrease to compensate for the increased moment of inertia. This phenomenon is akin to an ice skater extending their arms to slow down their spin while conserving angular momentum. Hence, the correct answer is [A] Will decrease. This effect is predictable based on fundamental principles of rotational motion and applies universally regardless of specific table or boy characteristics, making the change in angular velocity predictable and consistent.
See lessA girl is swinging on a swing in a sitting position. When the girl stands up, the time period of the oscillations will
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standinRead more
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standing, her center of mass rises, lengthening the pendulum and slowing down the swing’s period. This phenomenon is governed by the principle of conservation of energy and the relationship between potential and kinetic energy in a pendulum system. Regardless of the girl’s height, this change in the swing’s dynamics remains consistent. Therefore, the correct answer is [B] increase. The act of standing redistributes her mass, influencing the swing’s rhythm and extending the time taken for each oscillation.
See less