This document discusses levers as a type of simple machine. It describes the three types of levers - first, second, and third order levers - and provides examples of each. The document also provides a scenario describing various tools that use levers, such as seesaws, wheelbarrows, knives, and tongs. It concludes with homework questions that ask the reader to identify which type of lever is used in various tasks.

1. LEVER
Team Teaching
B.Ed 1st year
Sonal Bharal
Navneeta Bhatacharya

2. Simple machine

3. Types of simple
machine

4. LEVER

9. Types of Lever

10. First order Lever

11. Examples

12. Second order Lever

13. Examples

15. Third order Lever

16. Examples

17. Recap

18. Recap

19. Application
Ravi and Savita sit on a see saw in a
garden. In the mean time, a gardener is
trimming trees with a sears. He puts the
leaves and other garbage in the wheel
barrow. Later, Ravi gets thirsty and he
buys lemon sherbet. The sherbet seller
cuts the lemon with a knife and squeezes
with alemon squeezer. He puts small
pieces of ice with tongs in the glass.

20. HOMEWORK
Q. Which lever would you use to perform
following tasks and classify type of lever.
a.Cut picture from a magazine.
b.Lift a hot pan without a handle.
c.Squeeze out lemon juice.
d.Trap a fish from water.
e.Take out nail from a wall.

21. Pulley

23. Simple machine