Force , energy and simple machines

What is the arrangement of the types of levers?

• First class lever:

  L-E-F

  Second class lever:

  F-L-E

  Third class lever:

  J-L-F

• First class lever:

  L-F-E

  Second class lever:

  F-L-E

  Third class lever:

  F-E-L

• First class lever:

  E-L-F

  Second class lever:

  L-F-E

  Third class lever:

  F-L-E

• First class lever:

  P-J-M

  Second class lever:

  F-L-E

  Third class lever:

  J-P-M

How types of levers are there?

How many simple machines are there?

• 3

• 9

• 6

• 1

What is force?

Can energy be destroyed or created?

• Yes

• No

• None of these

• Can’t tell

What is energy?

What are complex machines?