Apulley is used to lift a heavy mass from the floor to a platform. the ima of the system is 5 and the ama is 2.5. what is the efficiency of the system?

The efficiency of the system is 50 %.

Explanation:

Given that,

IMA of the system = 5

AMA of the system = 2.5

The formula of efficiency of the system is defined as:

Where, IMA = Ideal mechanical advantage

Ideal mechanical advantage is equal to the effort distance divided by the resistance distance.

AMA = Actual mechanical advantage

Actual mechanical advantage is equal to the resistance force divided by the effort force.

Hence, The efficiency of the system is 50 %.

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