Calculating Mechanical Advantage review

MA = (Input Length)/(Output Length)

The formula for mechanical advantage of a lever

The distance from the effort to the fulcrum

What is input length?

The distance from the resistance to the fulcrum

What is output length?

fulcrum, effort force, resistance force

Name the three components of a lever

5

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 a the lever?

1.5

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

0.4

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?

4

A lever has an input arm of 2.4 meters and an output arm of 0.6 meters. What is the mechanical advantage?

4

A lever with an input arm of 2 meters has an output arm of 0.5. What is the mechanical advantage?

4.8

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

4

A lever with an input arm of 16 meters has a mechanical advantage of 4. What is the length of the output arm?

75

A child's tory rake is held so that its output arm is 25 meters. If the mechanical advantage is 3, what is the input arm length?

1

A construction worker uses a board and log as a lever to lift a heavy rock. If the input arm is 3 meters long and the output arm is 1 meter long, what is the mechanical advantage of the lever?

9

A lever with a mechanical advantage of 3 has an output arm length of 3. What is the length of the input arm?

3

A hammer has an input length of 18 centimeters and has a mechanical advantage of 6. What is the length of the output arm?

9

What is the mechanical advantage of a lever that has an input length of 0.9 meters and an out put length of 0.1 meters?