Question

# A compound machine is constructed by attaching a lever to a pulley system. Consider an ideal compound machine consisting of a lever with an IMA of 3.0 and a pulley system with an IMA of 2.0. a. Show that the IMA of this compound machine is 6.0. b. If the compound machine is 60.0 percent efficient, how much effort must be applied to the lever to lift a 540-N box? c. If you move the effort side of the lever 12.0 cm, how far is the box lifted?

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In this problem we have compound machine that has attached lever to a pulley system. It is given that ideal mechanical advantage of a lever is 3 and ideal mechanical advantage of a pulley is 2. In part a we have to show that ideal mechanical advantage of compound machine is 6, in part b we have to calculate how much effort must be applied to the lever to lift 540 N if total effectivity is 60% and in part c we have to calculate how far is the box lifted if we move lever for 12 cm.

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