Question

What is the mechanical advantage of a double pulley?

Answer 1

A double pulley is a system of two pulleys used together to move a load. This term may refer to two separate pulleys joined by ropes and used together.

It may also refer to a single unit of two pulleys next to one another rotating on a common axle.

The term "mechanical advantage" refers to the force needed to move a load divided by the resistance force that the load exerts, such as its weight.

Higher mechanical advantage means that less effort is required to move the same load.

The purpose of a double pulley is to increase the mechanical advantage of the system, thereby reducing the effort required to move a given load.

Answer 2

Answer:

Double pulley can required less efforts than single pulley to move loads. Higher mechanical advantage means that less effort is required to move the same load. By using a double pulley we requird a less effort to move the same load as compare to single one for that purpose we employed double pulley.