Calculating Mechanical Advantage

Calculating Mechanical Advantage

Inclined Plane, Pulley, Lever

Mechanical Advantage- Inclined Plane

Mechanical Advantage = distance height

distance

height

Now show me what you have learned!

What is the mechanical advantage of a ramp that is 10 meters long and 2 meters high?

10 meters

2 meters

A. 20 B. 5 C. 0.2 D. 10

What is the mechanical advantage of a ramp that is 12 meters long and 4 meters high?

A. 3 B. 48 C. 4 D. 0.3

Mechanical Advantage- Pulley

MA = count the # of “supporting ropes”

Now show me what you have learned!

What is the mechanical advantage of the pulley A, B, and C?

E

E

E

A B C

MA = 3 MA = 4MA = 3

Mechanical Advantage- Lever

MA = distance of the EFFORT arm distance of the RESISTANCE arm

MA = Output Force (Newtons)___ Input Force (Newtons)

Effort arm = INPUT FORCEResistance arm =

OUTPUT FORCE

What is the mechanical advantage of the lever below?

2 cm4 cm

A. 8 B. 0.5 C. 2 D. 4

MA = distance of the EFFORT arm distance of the RESISTANCE arm

What is the mechanical advantage of the lever below?

5 cm10 cm

A. 5 B. 0.5 C. 2 D. 50

MA = distance of the EFFORT arm distance of the RESISTANCE arm

What is the mechanical advantage of the lever below?

30 N60 N

A. 180 B. 20 C. 30 D. 2

MA = Output Force (Newtons)___ Input Force (Newtons)

What is the mechanical advantage of the lever below?

5 N20 N

A. 4 B. 100 C. 5 D. 0.25

MA = Output Force (Newtons)___ Input Force (Newtons)