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प्रश्न
State the condition under which the mechanical energy is conserved.
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उत्तर
Mechanical energy is conserved only when there are no frictional forces for a given system (i.e., between the body and the air). Thus, conservation of mechanical energy is strictly valid only in vacuum, where friction due to air is absent.
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संबंधित प्रश्न
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- the body has reached the ground.
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