PreE 5.1 Levers and Mechanical Advantage

Front

What is the percentage of the input work that is converted to output work?

Back

Efficiency

Front

What type of lever is a see-saw?

Back

First Class Lever

Front

How is work defined?

Back

The transfer of force over a distance.

Front

What is a First Class Lever?

Back

A lever where the fulcrum is between the effort and the load.

Front

What is a Second Class Lever?

Back

A lever where the load is between the fulcrum and the effort.

Front

What is a Third Class Lever?

Back

A lever where the effort is between the fulcrum and the load.

Front

What is Mechanical Advantage?

Back

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

Front

How do you calculate Mechanical Advantage for levers?

Back

Mechanical Advantage = Length of Effort Arm / Length of Load Arm.

Front

What is the formula for Work?

Back

Work = Force x Distance.

Front

What is the unit of Work?

Back

Joule (J).