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प्रश्न
State two conditions when the work done by a force acting on a body is zero.
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उत्तर
(i) When there is no displacement by the force in the body.
(ii) When the displacement is normal to the direction of the force.
संबंधित प्रश्न
State two condition for a body acted upon by several forces to be in equilibrium.
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State two conditions for a body acted upon by several forces to be in equilibrium.
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