Question

Principle of simple machine

Answer 1

Answer:

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 (also called leverage) to multiply force.Usually the term refers to the six classical simple machines which were defined by Renaissance scientists:-

Lever

Wheel and axle

Pulley

Inclined plane

Wedge

screw

A simple machine uses a single applied force to do work against a single load force.

Answer 2

Answer:

The principle of simple machine is the output work of a machine is equal to the input work.

Explanation:

Simple machines are the simple devices that helps us to make our work easier and faster.

There are six types of simple machines. They are lever, pulley, wheel and axle, inclined plane, screw and wedge. Functions of simple machines are:

• They change the direction of force applied.
• They magnify the effort applied.
• They increase the rate of doing work.
• They make our work safe as well as easy.

Input work is the work done on the machine and output work is the work done by the machine.

The principle of simple machine is,

Output work=Input work

i.e load × load distance = effort × effort distance