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    ASTROPHYSICS's Avatar
    ASTROPHYSICS Posts: 1, Reputation: 1
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    #1

    Apr 18, 2009, 10:43 AM
    Machines and efficiency
    Aforce of 300N is necessary to slide a 50 kg mass up an inclined plane.
    a)calculate the actual mechanical advantage of this inclined plane.
    b)if the ramp is 2.om long and 1m high calciulate the efficienyof this machine.
    :confused:
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Apr 18, 2009, 11:17 AM

    If you were to lift the mass directly vertically, you'll need a force of 500N (through F=ma, and taking a as 10m/s^2)

    However, with the inclined plane you only need 300. You can get the mechanical advantage now?

    Then, for the part b, have a drawing. Find the component of parallel to the plane.

    Efficiency = Output / Input

    Hope it helped. :) Post back if you have any difficulties.
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