Mechanical Advantage of Levers Flashcard

Front

What is mechanical advantage?

Back

The number of times a machine increases input force.

Front

How is mechanical advantage calculated?

Back

Mechanical Advantage (MA) = Output Force / Input Force.

Front

If a lever has an effort arm of 2 meters and a mechanical advantage of 4, what is the resistance arm's length?

Back

4 meters.

Front

What is the mechanical advantage of a lever with an effort arm of 12 meters and a resistance arm of 6 meters?

Back

2.

Front

Jeff lifts a rock weighing 600 Newtons using a lever. If he weighs 150 Newtons, what is the mechanical advantage provided by the lever?

Back

4.

Front

Joe lifts a 10,000 N car with a force of 1000 N using a lever. What is the mechanical advantage?

Back

10.

Front

What does a mechanical advantage greater than 1 indicate?

Back

The machine helps to lift a heavier load than the input force applied.

Front

What does a mechanical advantage of 1 mean?

Back

The input force is equal to the output force; no advantage is gained.

Front

In a lever, what is the effort arm?

Back

The distance from the fulcrum to the point where the input force is applied.

Front

In a lever, what is the resistance arm?

Back

The distance from the fulcrum to the point where the output force is applied.