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1 February, 21:56

If a cyclist of mass 70kg uses a bicycle of mass 7kg, how much work must the cyclist do against gravity in order to ascend to 2100 m from sea level (0m)

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  1. 1 February, 23:51
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    Correct answer: W = 1,584,660 J = 1.58466 · 10⁶ J = 1.58466 MJ

    Explanation:

    Work is a measure of the change in potential energy in this case and the formula is W = Ep = m· g · h if we take g = 9.8 m/s²

    W = 77 · 9.8 · 2,100 = 1,584,660 J = 1.58466 · 10⁶ J = 1.58466 MJ

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