Lever 7-22

Front

What is a lever?

Back

A lever is a simple machine that helps lift or move heavy objects using a fulcrum.

Front

What is a fulcrum?

Back

A fulcrum is the point on which a lever pivots or turns.

Front

What are the three parts of a lever?

Back

The three parts of a lever are the effort, load, and fulcrum.

Front

What is effort in a lever?

Back

Effort is the force applied to move the load.

Front

What is load in a lever?

Back

Load is the weight or resistance that needs to be moved.

Front

How does a lever make work easier?

Back

A lever makes work easier by allowing you to use less force to lift a heavy object.

Front

What is an example of a lever?

Back

A seesaw is an example of a lever.

Front

What is the formula for calculating the mechanical advantage of a lever?

Back

Mechanical advantage = length of effort arm / length of load arm.

Front

What is a first-class lever?

Back

A first-class lever has the fulcrum in the middle, like a seesaw.

Front

What is a second-class lever?

Back

A second-class lever has the load in the middle, like a wheelbarrow.