Force/Effort (N) X Distance of Force (m) = Load (N) X Distance of Load (m)

Effort (N)Load (40N)

2m4m

Effort (N) Load (30N) 2m

4m

Effort (N)Load (30N)3m

3m

Learning Objective: 2.1 Analysing levers

Learning Outcome: Solve problems related to levers.

1. Solve the following problems using the formula below.

First Class Lever.

Second Class Lever.

Third Class Lever.

Answer:

Answer:

Answer:

Force/Effort (N) X Distance of Force (m) = Load (N) X Distance of Load (m)

Effort (N)Load (40N)

2m4m

Effort (N) Load (30N) 2m

4m

Effort (N)Load (30N)3m

3m

Learning Objective: 2.1 Analysing levers

Answer Scheme

1. Solve the following problems using the formula below.

First Class Lever.

Second Class Lever.

Third Class Lever.

Answer: Effort X 4m = 40N X 2m Effort = (40N X 2m) ÷ 4m = 20N

Answer:Effort X 6 m = 30N X 2m Effort = (30N X 2m) ÷ 6m = 10N

Answer:Effort X 3 m = 30N X 6m Effort = (30N X 6m) ÷ 3m = 60N