Work and Mechanical Advantage

Front

What is effort (input) force?

Back

The force a person has to apply to the machine.

Front

What is mechanical advantage (MA)?

Back

The ratio of output force to input force in a machine.

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) x Distance (d).

Front

What is output force?

Back

The force that the machine exerts on an object.

Front

What is an inclined plane?

Back

A flat surface that is tilted at an angle to help raise or lower objects.

Front

How does a pulley system work?

Back

It changes the direction of the force applied to lift an object.

Front

What is the relationship between force and distance in a pulley system?

Back

The more force used to pull the string, the faster the object will move.

Front

What is the purpose of a lever?

Back

To amplify an input force to lift or move a load.

Front

What is the mechanical advantage of a lever if the output force is twice the input force?

Back

The mechanical advantage is 2.

Front

What is the role of friction in machines?

Back

Friction opposes motion and can reduce the efficiency of machines.