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प्रश्न
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उत्तर
The work done by the gravitational force of the earth on a satellite revolving around the earth is zero because the motion of the satellite is perpendicular to the force at every point.
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संबंधित प्रश्न
Work is said to be done by a forte only when ................
When does a force perform work?
Give reasons for the following. No work is done if a man is pushing against a wall.
.A man raises a box of mass 50kg to a height of 2m in 20s, while another man raises the same box to the same height in 50s. Compare:
(i) the work done, and
(ii) the power developed by them.
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Give an example
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