Please explain all steps Determine the mechanical advantage

Please explain all steps.

Determine the mechanical advantage of the following pulley system. Show clearly the FBD(s). Study class notes and handouts: parallel forces in equilibrium.

Solution

Solution :

For a compound pulley system the mechanical advantage is othing but the number of rope sections except the one which is supporting the effort.

If you count the number of section here then it is 4

Hence Mechanical advantage is equal to 4.