Simple Machines

Front

A machine is a device that____________.

Back

changes either the magnitude or direction of force

Front

Which of the following listed is a simple machine? A car, An inclined plane, A bicycle, A chair

Back

An inclined plane

Front

Which 2 simple machines are modified versions of an inclined plane? Options: wedge and screw, lever and pulley, wheel and axle, wedge and pulley

Back

wedge and screw

Front

True or False: No machine is 100 % efficient.

Back

True

Front

What is the equation for efficiency?

Back

Work Output/Work Input

Front

What is the definition for mechanical advantage?

Back

the number of times a machine increases the input force

Front

What is the equation for Ideal Mechanical Advantage?

Back

Input distance/output distance

Front

What is the ideal mechanical advantage if you push down a lever 10 m from the fulcrum and the load is 2 m from the fulcrum?

Back

5