This document discusses the six types of simple machines: lever, screw, pulley, wheel and axle, inclined plane, and wedge. It provides examples for each type and explains how they make work easier to perform. Lever, screw, and pulley are described first, followed by wheel and axle, inclined plane, and finally wedge. In summary, the document outlines the six fundamental types of simple machines and how they help to mechanically advantage work.

2. SIMPLE MACHINES

3. Simple machines do not make less work;
they just make it easier to do work.
It would be hard to cut this
wood without the saw!

4. There are 6 different types of
simple machines:
(1). LEVER
(2). SCREW
(3). PULLEY
(4). WHEEL & AXLE
There are 6 different types of
(5). INCLINED PLANE
simple machines: (6). WEDGE

5. (1) LEVER
A lever is a stiff bar that moves about
a fixed point (fulcrum).
A lever is used to push, pull, or lift things.

6. Shovel is an example of a
lever.

7. (2) SCREW
A screw is an inclined plane
wrapped around a cylinder or cone.
A common use of the screw is to hold
objects together.

8. A bottle lid and a wood screw are examples of a
screw.
So far we have learned about 2 types of simple
machines: levers & screws….

9. (3) PULLEY
A pulley is a wheel that has a rope wrapped
around it.
A pulley can be used to lift heave objects by
changing the direction or amount of the force.

10. A flagpole uses a pulley to
raise the flag.
Now we have learned about 3 types of simple machines: levers,
screws, and pulleys…..

11. (4) WHEEL & AXLE
A wheel & axle consists of a rod attached to a
wheel.
A wheel & axle makes it easier to move or turn
things.

12. A bicycle wheel, roller skates, and a
doorknob are all examples of a wheel &
axle.
We now know about 4 types of simple
machines: levers, screws, pulleys, and
wheels & axles.

13. 5) INCLINED PLANE
An inclined plane is a flat surface that is
raised so that one end is higher than the
other.
An inclined plane helps move heavy objects up
or down.

14. A RAMP IS AN EXAMPLE
OF INCLINED PLANE.
Let’s add inclined plane to our list of simple
machines (along with levers, screws, pulleys,
and wheels & axles).

15. (6) WEDGE
A wedge is wide at one end and pointed at the
other to help cut or split other objects.

16. Now we have learnt about 6 types of simple
machines :-
LEVER (4) WHEEL & AXLE
(2) SCREW (5) INCLINED
PLANE
(3) PULLEY (6) WEDGE

17. SIMPLE MACINES make work
easier !