Question

1. What is a simple machine?
2. List any three different simple machines.
3. Why is an inclined plane called a simple machine?
4. Name any two tools which are wedges.


1.Draw and describe a wheel and axle.
2.Differentiate between a first class levet and a third class lever ​

Answer 1

Answer:

1 simple machine is used to work easily

2 scissor, knife, wheelbarrow

3 it is used to slide things easily such as it is used in hospital,working area, etc...

4 scissors,twiser, knife

Answer 2

A simple machine is a mechanical device that changes the direction and/or magnitude of a force. In general, they can be defined as the simplest mechanisms that use leverage (also called mechanical advantage) to multiply force.
Examples: pulley,lever,wheel and axle

The inclined plane is the simplest of simple machines because to make it work, nothing moves. ... The way an inclined plane works is that to save effort, you must move things a greater distance.
Knives,chisels

Ans:- (i) First class- The fulcrum is located between the force and resistance, (ii) Second class- Resistance is between the force and the fulcrum. (iii) Third class- The force is between the resistance and the fulcrum.
The wheel and axle consists of a round disk, known as a wheel, with a rod through the centre of it, known as the axle. This system uses angular momentum and torque to do work on objects, typically against the force of gravity. The wheel and axle simple machine is closely related to gears. Sry I can’t draw.
And pls thank