Activity 1.1.1 Second Class Lever

This is my second class lever.

Calculate:
Ideal Mechanical Advantage (IMA)
IMA= Distance(effort force)/Distance(resistant force)
IMA= 15 Lego holes/ 8 Lego holes
IMA= 1.875

Ideal Effort Force to overcome the known Resistance Force
MA(mechanical advantage)=Force(resistance)/Force(effort)
2= 1 Newtons/ Force(effort)
Force(effort)= 0.5 Newtons

Actual Mechanical Advantage (AMA)
AMA=Force(resistance)/Force(effort)
AMA= 1 Newtons/ 0.5 Newtons
AMA= 2

Efficiency of the lever system
Efficiency= AMA/IMA
Efficiency= 2/1.875
Efficiency= 1.07

Examples of 2nd Class Lever:

1. Wheel Barrow
2. Broom