5.2 Review

A device that makes doing work easier is a _______

• machine
• power
• work
• output force

Which is NOT one of the three ways machines can make work easier?

• increase force applied
• increase distance over which force is applied
• changing the direction of applied force
• changing the amount of work done

The force applied TO the machine

• input force
• output force

The force applied BY the machine

• input force
• output force

Work you do on the machine

• input work
• output work

Work done by the machine

• input force
• output force

W_out will always be ________ than W_in

• greater
• smaller
• the same

F_out / F_in is the equation for

• mechanical advantage
• efficiency 
• IMA
• Work

Amanda pushes a cart full of stones that weigh 600 N using 120 N of force. What is the mechanical advantage?

• 5
• 720,000
• 0.2

(W_out/W_in) x 100 is the equation for what?

• mechanical advantage
• efficiency
• work
• force