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Math Help - Confusing 'Word' in Physics

  1. #1
    Senior Member sakonpure6's Avatar
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    Confusing 'Word' in Physics

    Hi, if a question says:

    A person uses a lever to move an object with 500 N resistance 0.5m off the off the ground. If the efficiency of the lever is 65%, how much work does the person do?
    does the "500 N resistance" mean the applied force or the total force of friction acting on the object?
    Would work = 500N*0.5m?

    Thank you for your time!
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  2. #2
    MHF Contributor

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    Re: Confusing 'Word' in Physics

    This isn't really a math problem- and it looks to me like this is a badly worded physics problem. I think it must mean the person is applying 500 N force to the lever. Assuming that, if the efficiency is 65% what Is the actual weight being lifted? And how much work is done in lifting that weight 0.5 m?
    Thanks from sakonpure6
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