Work, Power, Simple Machines

Front

What is work?

Back

When the object moves in the same direction in which the force is exerted.

Front

What is the law of conservation of energy?

Back

Energy cannot be created or destroyed, only converted from one form to another.

Front

What is the formula for Mechanical Advantage (MA)?

Back

MA = Effort Length / Resistance Length.

Front

If the effort length of a crowbar is 26 cm and the resistance length is 4 cm, what is the MA?

Back

6.5

Front

What are the units of force?

Back

Newtons.

Front

Which of the following is doing work?

Back

Picking up a pencil.

Front

What is power?

Back

The rate at which work is done or energy is transferred.

Front

What is the formula for calculating power?

Back

Power = Work / Time.

Front

What is a simple machine?

Back

A device that makes work easier by allowing us to push or pull over increased distances.

Front

Name three types of simple machines.

Back

Lever, pulley, inclined plane.