Activity 15

Solve the following problems

Problem A

A man is lifting a cupboard with a simple machine. The mass of the cupboard is m=50 kg. To move cupboard, the man takes a 250N force. Find the mechanical advantage of the machine.

Problem B

A person weighing 800N moves an object with a simple machine using all his weight. The mechanical advantage of the machine is MA=5. Determine the mass of the object.

Problem C

A car has 1000 kg mass. We want to move it with a machine able to multiply the force applied 8 times. Calculate the effort we have to do to move the car