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On what factors does the turning effect of a force depends? What is the turning effect of force called?
The turning effect of a force, or torque or moment of force, depends on three main factors. First, the magnitude of the force is critical. A larger force generates a stronger turning effect, making it more effective in causing rotation. Second, the perpendicular distance from the axis of rotation toRead more
The turning effect of a force, or torque or moment of force, depends on three main factors. First, the magnitude of the force is critical. A larger force generates a stronger turning effect, making it more effective in causing rotation. Second, the perpendicular distance from the axis of rotation to the point where the force is applied, known as the lever arm, plays a significant role. The farther the force is applied from the pivot point, the greater the torque. For example, pushing a door at its edge requires less effort than pushing it near the hinges because the distance from the pivot is larger. The third one is the angle at which force is applied. If the force should be applied to the lever at an angle that will ensure maximum turning effect, it would be perpendicular. If it applies at an angle, then just the perpendicular part of it has a role to play in creating rotation.
The turning effect of a force is known as torque or moment of force. This concept is essential to rotational motion and helps understand the proper working of levers, wrenches, and mechanical systems such as engines and turbines in applications.
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See lessMention some important contributions of Albert Einstein to physics.
(i). Mass-energy equivalence (ii). Photoelectric effect and (iii). Theory of relativity For more please visit here: https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-1/
(i). Mass-energy equivalence
(ii). Photoelectric effect and
(iii). Theory of relativity
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Who first gave theory of expanding universe?
Edwin Hubble of U.S.A. For more please visit here: https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-1/
Edwin Hubble of U.S.A.
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What is physics? What is the origin of the word physics? What is its Sanskrit equivalent?
Physics is the branch of science that deals with the study of matter, energy, and the fundamental forces of nature, as well as the interactions between them. It aims to understand the behavior of the universe at both macroscopic and microscopic scales, from the motion of celestial bodies to the propRead more
Physics is the branch of science that deals with the study of matter, energy, and the fundamental forces of nature, as well as the interactions between them. It aims to understand the behavior of the universe at both macroscopic and microscopic scales, from the motion of celestial bodies to the properties of subatomic particles. Physics seeks to uncover the laws that govern natural phenomena and applies these principles to explain, predict, and sometimes control various processes in the world around us.
The word physics is derived from the Greek word “physis,” meaning “nature” or “natural things.” The term reflects the field’s focus on understanding the natural world and the fundamental principles that govern its functioning.
In Sanskrit, the equivalent of “physics” is generally referred to as “рднреВрддрд╡рд┐рдЬреНрдЮрд╛рди” (Bh┼лta-Vij├▒─Бna), which translates to “the science of elements” or “the science of nature.” Another term, “рджреНрд░рд╡реНрдпрдЧреБрдг” (Dravya-Guna), is used to describe the study of the properties of matter. These terms reflect the ancient Indian understanding of natural phenomena and the exploration of matter and its properties in a scientific context.
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What is gravitational force? Mention its important properties. Give some examples of gravitational force.
The gravitational force is one of the four fundamental forces of nature, responsible for the attraction between objects with mass. It acts over an infinite range and is always attractive, playing a key role in the structure and dynamics of the universe. According to Newton's law of gravitation, theRead more
The gravitational force is one of the four fundamental forces of nature, responsible for the attraction between objects with mass. It acts over an infinite range and is always attractive, playing a key role in the structure and dynamics of the universe. According to Newton’s law of gravitation, the force between two masses is proportional to the product of their masses and inversely proportional to the square of the distance between them. Albert Einstein’s general theory of relativity further refined this understanding, describing gravity as the curvature of spacetime caused by mass and energy.
Important Properties of the Gravitational Force:
1. It is the weakest of the four fundamental forces but dominates at large scales due to its cumulative nature and infinite range.
2. It is always attractive and acts along the line joining the centers of two masses.
3. The force depends on the masses of the objects and the distance between them, as described by
ЁЭР╣ = G m1m2.r^2 , where G is the gravitational constant.
4. Gravitational force is independent of the medium through which it acts and affects all objects with mass equally.
Examples of Gravitational Force:
1. The force that keeps planets in orbit around the Sun and governs the motion of celestial bodies.
2. The attraction between Earth and objects near its surface, which we experience as weight.
3. The phenomenon of tides, caused by the gravitational pull of the Moon and the Sun on Earth’s oceans.
4. The binding of galaxies and galaxy clusters through gravitational attraction.
5. The collapse of massive stars into black holes, where gravity becomes extremely strong, warping spacetime significantly.
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