Levers

Question 1

Define a “lever”

Answer 1

Any rigid of body that applies force to an object through a fulcrum point (pivot point)

Question 2

Name the 3 things a lever consists of?

Answer 2

1.Effort
2.fulcrum
3.load

Question 3

Define the “effort” in a lever

Answer 3

A point where’d force is applied to the muscle
(Exp;bicep)

Question 4

Define “fulcrum” in a lever

Answer 4

The pivot point like a joint
(Exp;elbow)

Question 5

Define the “load” in a lever

Answer 5

The load point (weight)
At the body part and the object we are trying to move
(Exp;dumbbell)

Question 6

Define a “first class lever”

Answer 6

The fulcrum is in the middle of the effort and the load

(Exp:The neck raising your head to head a football)
Fulcrum: neck
Effort: muscles
Load: Weight of the head

Question 7

Define “second class lever”

Answer 7

The load is in the middle between the fulcrum and effort

(Exp;found in ankle area, when standing on tiptoe such as calf raise )
Fulcrum:ball of foot
Load:weight of body
Effort:contraction of muscle

Question 8

Define ‘third class lever”

Answer 8

The effort is in the middle between the fulcrum and the load
(Exp:bicep curl)
Fulcrum:elbow joint
Effort:contracting
Load:weight