CBSE-IX-Science

15: 2-Work and Energy

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  • #8
    Does the transfer of energy take place when you push a huge rock with all you might and fail to move it? Where is the energy you spend going?
    Ans : While we push a huge rock with all our might(power) but fail to move it no energy transfer occurs as cellular energy simply wastes out in muscle contraction and relaxation even heat generation(sweating).