PHYSICS

Which machines has more mechanical advantage pulley or incline plane?

I asked this question before but did not quite understand the answers that were given to me. I think that the incline plane has more mechanical advantage in a friction less environment.

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  1. The MA of a pulley is 2.

    The MA of an inclined plane is slope length divided by height, or 1/sinTheta

    so at these angles...

    angle MA
    45 1/.7=1.4
    60 1/.866=115
    30 1/.5=2
    15 1/.259=3.9

    So it depends on the angle of the incline plane.

  2. ohh i finally get it!

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