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प्रश्न
What is the work done on a body by the gravitational force towards the centre of the path acting when it moves along a circular path?
एका वाक्यात उत्तर
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उत्तर
When a body moves along a circular path, work done by the gravitational force towards the centre of the path is zero, because the displacement in this case is normal to the gravitational force.
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