Question

when do we need to use simple machine​

Answer 1

Explanation:

Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever

Answer 2

♥ Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities .

♥ Simple machines that are widely used include the wheel and axle , pulley , inclined plane , screw , wedge and lever .