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physics

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A 3.0 m long rigid beam with a mass of 100 kg is supported at each end. An 60 kg student stands 2.0 m from support 1. How much upward force does each support exert on the beam?

support 1-
support 2-

  • physics - ,

    .......100..60......
    ..........v......v.......
    ----------------------
    ^.......................^
    R1.................R2

    Take moments about R1,
    R2*3=100*1.5+60*2.0
    Take moments about R2
    R1*3=100*1.5+60*1.0
    Solve for R1 and R2. They should add up to 100+60.

  • physics - ,

    Deez........................................................................................................................................................................................................................................................................................................................................................Nutz

  • physics - ,

    All of that stuff but than multiple R1, R2 by 9.8

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