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प्रश्न
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उत्तर
The work done by the gravitational force of the sun on earth during its motion around the sun is zero because at every point, the displacement of earth is perpendicular to the gravitational force of sun i.e.,
W = Fd cos 900 = 0
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संबंधित प्रश्न
Work is said to be done by a forte only when ................
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