Soc 20 Levers

Question 1

First class lever

Answer 1

Fulcrum in the middle
Examples tricep dip/nodding your head,

Question 2

Second class lever

Answer 2

Load in the middle
Examples calf raises/using a wheelbarrow.
Work at a mechanical advantage.

Question 3

Third class lever

Answer 3

Effort in the middle
Examples tricep dip/nodding your head
Work at a mechanical disadvantage.

Question 4

When does Mechanical disadvantage happen.

Answer 4

When the effort and the load are both the same side of the fulcrum but the effort sits closer to the fulcrum than the load does.
The input of the lever is greater than the output.

Question 5

When does mechanical disadvantage happen

Answer 5

This happens when the output of the lever is greater than the input.The load is greater than the effort so you are getting more out than you are putting in.First and Second class levers both work at a mechanical advantage.