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प्रश्न
One joule is the amount of work done when a force of ......... moves a body through a distance of .......
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उत्तर
1N, 1m in its own direction
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संबंधित प्रश्न
Less force is needed when applied at a farther distance from the pivoted point.
State one way to decrease the moment of a given force about a given axis of rotation.
A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle. Answer the following
1) Is there any change in the momentum of the rocket? if yes, what causes the change in momentum?
2) Is there any force acting on the rocket? if yes, how much?
A body X of mass 5 kg is moving with velocity 20 m s-2 while another body Y of mass 20 kg is moving with velocity 5 m S-1. Compare the momentum of the two bodies.
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magnetic force
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Assertion & Reasoning
- Assertion: The sum of the clockwise moments is equal to the sum of the anticlockwise moments.
- Reason: The principle of conservation of momentum is valid if the external force on the system is zero.
