Work, Energy and Power

Related Questions

• A spherical ball of mass 20 kg is stationary at the top of a hill of height 100 m. It slides down a smooth surface to the ground, then climbs up another hill of height 30 m and finally slides down to a horizontal base at a height of 20 m above the ground. The velocity attained by the ball is

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• It is easier to draw up a wooden block along an inclined plane than to haul it vertically, principally because

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• Two bodies of masses 2m and m have their K.E. in the ratio 8 : 1, then their ratio of momenta is

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• A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is $(g = 9.8\,m/{\sec ^2})$

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• A particle of mass 'm' and charge 'q' is accelerated through a potential difference of 'V' volt. Its energy is

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