lever systems

Question 1

what is the order and positions of the parts of a first class lever system

Answer 1

•1-effort (top)
•2-fulcrum (bottom)
•3-resistance/load (bottom)

Question 2

what is the order and positions of the parts of a second class lever system

Answer 2

•1-fulcrum (bottom)
•2-resistance/load (top)
•3-effort (bottom)

Question 3

what is the order and positions of the parts of a third class lever system

Answer 3

•1-resistance/load (top)
•2-effort (bottom)
•3-fulcrum (bottom)

Question 4

what is mechanical advantage

Answer 4

how efficient a lever is at moving heavy loads
-effort arm (distance between fulcrum and effort)
-resistance arm (distance between fulcrum and load)

Question 5

what is the equation for mechanical advantage

Answer 5

mechanical advantage=effort arm/resistance arm