Machine Advantage

A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?

• 1

• 2.5

• 5

• 10

What is the mechanical advantage of a lever that has an input arm of 3 meters and an output arm of 2 meters?

• 1.5

• 1

• 0.67

• 3

A lever with an input arm of 2 meters has a mechanical advantage of 4. What is the output arm’s length?

• 2

• 4

• 6

• 8

A lever with an output arm of 0.8 meter has a mechanical advantage of 6. What is the length of the input arm?

• 2

• 4

• 6

• 8

A rake is held so that its input arm is 0.4 meters and its output arm is 1.0 meters. What is the mechanical advantage of the rake?

• 0.4

• 1

• 1.4

• 2

A broom with an input arm length of 0.4 meters has a mechanical advantage of 0.5. What is the length of the output arm?

• 2

• 1.5

• 1

• 0.5

A child’s toy rake is held so that its output arm is 0.75 meters. If the mechanical advantage is 0.33, what is the input arm length?

• 0.75

• 0.33

• 0.2475

• 0.6

A 5-meter ramp lifts objects to a height of 0.75 meters. What is the mechanical advantage of the ramp?

• 6.67

• 5.67

• 5

• 6

A 10-meter long ramp has a mechanical advantage of 5. What is the height of the ramp?

• 2

• 5

• 10

• 20

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters. How long is the ramp?

• 2

• 4

• 6

• 8