levers

Question 1

what is a lever system

Answer 1

a lever system enables movement within the body. They explain how our muscles bones and joints work together to produce different forces to move objects including oursleves.

Question 2

what are the 3 types of levers

Answer 2

• 1st class
• 2 class
• 3 class

Question 3

what is the fulcrum

Answer 3

the joint e.g. the elbow

Question 4

what is the effort

Answer 4

the agonist (the muscle that is causing the movement

Question 5

what is the load/resistance

Answer 5

the weight that you are tyring to move

Question 6

explain a second class lever system

Answer 6

• has the mechanical advantage to move a large load with a small effort.
• only found at the ankle joint in the body.

Question 7

explain a third class lever system

Answer 7

• greater distance between the load and the fulcrum, thus meaning it can generate and faster velocity and acceleration, due to having to travel further.

Question 8

where is the only second class lever in the body found

Answer 8

in the foot (ankle joint)

Question 9

what is the equation for mechanical advantage

Answer 9

mechanical advantage = effort arm/resistance arm