Simple Machines

Front

What is a machine?

Back

A device that changes force by reducing it over a larger distance.

Front

What is a wedge?

Back

One or two inclined planes that move when used, thick at one end and thin at the other.

Front

What is a pulley?

Back

A rope, chain, or belt wrapped around a wheel that changes the direction of an applied force.

Front

What is the mechanical advantage (MA) of a lever if the output force is 10,000 N and the input force is 1,000 N?

Back

10

Front

What is a wheel and axle?

Back

A wheel attached to a shaft; an example is a doorknob.

Front

What is the purpose of simple machines?

Back

To make work easier by changing the direction or magnitude of a force.

Front

What is an inclined plane?

Back

A flat surface that is tilted at an angle to help lift objects.

Front

What is a screw?

Back

An inclined plane wrapped around a cylinder, used to hold objects together or lift them.

Front

What is the formula for mechanical advantage (MA)?

Back

MA = Output Force / Input Force.

Front

What is a lever?

Back

A rigid bar that pivots around a fixed point (fulcrum) to lift or move loads.