Class of Lever

Question 1

Class of levers : Class 1, diagram

Answer 1

E—–/-—-L (The effort and load are on opposite sides with the fulcrum in middle)

Question 2

Class of levers : Class 2, diagram

Answer 2

E——–L–/\ (The effort and is at the opposite side from the fulcrum, and the load is in the middle)

Question 3

Class of levers : Class 3, diagram

Answer 3

/-—–E—–L (The load is at the opposite end to the fulcrum, with the effort in the middle)

Question 4

Class of levers : Class 1, example and why

Answer 4

Scissors. MA will increase if the load is closer to the fulcrum or the effort is further away from the fulcrum.

Question 5

Class of levers : Class 2, example and why

Answer 5

Wheelbarrow. MA will increase if the load is closer to the fulcrum or the effort is further away from the fulcrum.

Question 6

Class of levers : Class 3, example and why

Answer 6

Tweezers. Negative MA (force is decreased). They are used when a gentle force is needed