Activity 1.1.1 Wheel and Axle

This is my Wheel and Axle:

Calculate:

Diameter of the Wheel: 64 mm
Diameter of the Axle: 4 mm

Ideal Mechanical Advantage (IMA)
IMA= Diameter(axle/resistance force)/Diameter(wheel/effort force)
IMA= 4 mm/64 mm
IMA= 1/18

Ideal Mechanical Advantage (IMA) when resistance force is applied to the wheel
IMA= Diameter(wheel/resistance force)/Diameter(axle/effort force)
IMA= 64 mm/4 mm
IMA= 18/1

Ideal Effort Force (MA)- Force needed to overcome the known resistance force if the resistance force is applied to the wheel
MA= Resistance Force/Ideal Mechanical Advantage
MA= 0.5 Newtons x 18
MA= 9 Newtons

Actual Mechanical Advantage (AMA)
AMA= Force Resistance/Force Effort
AMA= 0.5 Newtons/15 Newtons
AMA= 0.033

Efficiency of wheel and axle system (E) when the resistance force is applied to the wheel
E= AMA/IMA
E= 0.033/18
E= 0.001852

Examples of wheel and axle:

1. Steering Wheel
2. Faucet