A body falls towards earth in air. Will its total mechanical energy be conserved during the fall? Justify.
A body falls towards earth in air. Will its total mechanical energy be conserved during the fall? Justify.
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No, because resistive force of air also acts on the body which is a non-conservative force. So the gain in KE would be smaller than the loss in PE.
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No, the mechanical energy is not conserved, Because resistive force of air also acts on the body which is a non-conservative force, So the gain in KE would be smaller than the loss in PE.
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