6 - Unit 4, Section 5 - Day 3

Mechanical Advantage

Unit 4, Section 5 - Day 3

Mechanical Advantage - the number of times the applied force is increased

• F_O - output force (the force exerted by the machine

• F_I - input force (the force you apply on the machine

Mechanical Advantage

You apply a force of 15 newtons to a lever, and the lever exerts (puts out) 540 newtons. What is the mechanical advantage of the lever?

Question 1

A pulley has a mechanical advantage of 10. What would the output force of the pulley be if you applied a force of 350 newtons to it?

Question 2

An inclined plane has a mechanical advantage of 15. What force would you have to apply to the pulley to produce an output force of 4,500 newtons?

Question 3