Question

The ideal mechanical advantage of a pulley system is equal to the?

Answer 1

Answer: The correct answer is "Number of rope segments supporting the load".

Explanation:

Mechanical advantage: It is defined as the ratio of the force produced by a machine to the force applied on the machine. The ideal mechanical advantage of a machines is mechanical advantage in the absence of friction.

The ideal mechanical advantage of a pulley system is equal to the number of rope segments which is supporting the load. More the rope segments, It is more helpful to do the lifting the work.

It means that less force is needed for this task to complete.

Therefore, the correct option is (C).

Answer 2

Answer:

Number of rope segments supporting the load.

Explanation:

In general the mechanical advantage of any simple machine is defined as the ratio of output force to the input force. It is also defined as the ratio of input arm distance to the output arm distance.

But in case of pulley, the ideal mechanical advantage is equal to the number of rope segments supporting the load. Hence, the correct option is (c).