Chapter 3: Work and Machines

Front

The unit of power is the ____.

Back

watt

Front

An inclined plane wrapped around a cylindrical post is a ____.

Back

screw

Front

Which is not a type of simple machine?

Back

spring

Front

The amount by which a machine multiplies an effort force is called the ____.

Back

mechanical advantage

Front

To do work on an object the object must ______ some distance as a result of your force.

Back

move

Front

What is work in physics?

Back

Work is done when a force causes an object to move a distance.

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 the six types of simple machines.

Back

Lever, Inclined Plane, Wedge, Screw, Pulley, Wheel and Axle.

Front

What is mechanical advantage?

Back

The ratio of the output force produced by a machine to the input force applied.

Front

What is the formula for calculating work?

Back

Work = Force x Distance.