Question

12. Which of the following can be calculated if the length of the effort arm and the length of the resistance arm are given? (Points : 3)
the mechanical advantage of a lever can be calculated.
the mechanical advantage of a wheel and axle can be calculated.
the mechanical advantage of a pulley can be calculated.
the mechanical advantage of a wedge can be calculated.

Answer 1

A.. (the force in the effort arm*the length of the effort arm)/the length of the resistance arm = the force on the resistance arm

Answer 2

so length of effort arm/by length of resistance arm = force at resistance arm/force at effort arm= mechanical advantage