Find out the mechanical advantage of this simple machine.

Simple machines

The diagram below shows a lever in use. If FA = 40 cm, AB = 60 cm, then find the mechanical advantage of the lever.

A pulley system has three pulleys. A load of 120 N is overcome by applying an effort of 50 N. Calculate the mechanical advantage of this system.

Define mechanical advantage of a lever.

If the parallel forces acting on a lever are in the ratio 3 : 5 then what is the mechanical advantage of the lever ?

Write down a relation expressing the mechanical advantage of a lever.

A pulley system has a velocity ratio of 4 and an efficiency of 90%, calculate: The mechanical advantage of the system.

A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.