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.
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by rRead more
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by raising a Gudi flag made of a bamboo stick adorned with a bright cloth, neem leaves, and a garlanded sugar candy. Homes are cleaned, rangolis are drawn, and traditional dishes like Puran Poli are prepared. It signifies new beginnings, prosperity, and the triumph of good over evil. Families come together to celebrate, exchange greetings, and seek blessings for a prosperous year ahead.
There 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 lessWhat is Gudi Padwa?
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by rRead more
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by raising a Gudi flag made of a bamboo stick adorned with a bright cloth, neem leaves, and a garlanded sugar candy. Homes are cleaned, rangolis are drawn, and traditional dishes like Puran Poli are prepared. It signifies new beginnings, prosperity, and the triumph of good over evil. Families come together to celebrate, exchange greetings, and seek blessings for a prosperous year ahead.
See less