Which of the following can be calculated when given the radius of a wheel and the radius of an axle?
A. the effort force needed to move the wheel and axle
B. the amount of resistance force the wheel and axle can overcome
C. the mechanical advantage of the wheel and axle
D. the increase in effort force

Question

Which of the following can be calculated when given the radius of a wheel and the radius of an axle?
 A. the effort force needed to move the wheel and axle 
 B. the amount of resistance force the wheel and axle can overcome 
 C. the mechanical advantage of the wheel and axle 
 D. the increase in effort force

anonymous · Answer

The mechanical advantage of the wheel. 

Without knowing anything about the masses and moment of inertias of the wheel and axle or the forces acting on the wheel or axle, we cannot describe the motion of the wheel and axle. 

We cannot describe the increase in effort force, because we don't know which device, the wheel or the axle, the effort force is acting on.

anonymous · Answer

wanna help me with the rest of my test?

anonymous · Answer

Sure. Just post them up as separate questions.

anonymous · Answer

haha, ok