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29 December, 20:50

The mechanical energy of a bicycle at the top of a hill is 6,000 J. The bicycle stops at the bottom of the hill by applying the brakes. If the potential energy of the bicycle is 2,000 J at the bottom of the hill, how much thermal energy was produced?

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  1. 29 December, 22:58
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    Thermal energy produce = 4,000 J.

    Explanation:

    Given that

    Mechanical energy at the top of hill = 6,000 J

    Mechanical energy at the bottom of hill = 2,000 J

    We know that energy is conserve

    Energy at top of hill = energy at bottom of hill + Thermal energy produce

    So now by putting the values

    Energy at top of hill = energy at bottom of hill + Thermal energy produce

    6,000 = 2,000 + Thermal energy produce

    Thermal energy produce = 6,000-2,000 J

    Thermal energy produce = 4,000 J.

    As we know that thermal energy produce due to friction when one mechanical component slides on the other mechanical component then always heat is generated and this heat is known as thermal energy.
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