CBSE Class 11 Physics Revision Notes

CBSE Class 11 Physics Chapter 5 – Law of Motion Class 11 Notes

Law of Motion Class 11 CBSE  Revision Notes

Law of Motion Class 11 Notes – The chapter tells that Aristotle first discovered force. Also, he finds that force is necessary to keep a body in motion. Furthermore, a force is necessary for the practice to counter the opposing force of friction. Moreover, Galileo extrapolated a simple observation on the motion of bodies on inclined planes. In conclusion of this observation, he has given the law of inertia. In addition, Newton’s first law of motion is the rephrasing of this same law. Besides, Newton’s first law of motion states that, if the external force on a body is zero then its acceleration will also be zero.

Besides, the momentum of a body is the product of its mass and velocity. Newton’s second law of motion says that the change of momentum of a body will be proportional to an applied force. Also, it will take place in the direction in which force acts. Furthermore, the impulse is the product of force and time which is equal to change in momentum. Moreover, the notion of impulse is important when a large force acts for a short duration to produce a measurable change in momentum. In addition, Newton’s third law of motion says that every action has an opposite and equal reaction.

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Sub-topics covered under Law of Motion

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