Question

1. Why do we need machines?
2. What is a simple machine?​

Answer 1

Answer:1 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.

2 A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage to multiply force.

Answer 2

Answer :

Machine's have the capacity to do the work of hundred people at a same time . Machine's r also to use to add comfort in human's life by which we can enjoy our life with luxury .... .

2 . The simple machine r the inclined plane , lever , wedge , wheel and axel , pully and screw .