Question

Which of the following can be calculated when given the radius of a wheel and the radius of an axle?

Answer 1

Possibly B, I believe because a radious is half a diameter

Answer 2

Answer:

C. the mechanical advantage of the wheel and axle

Explanation:

the ratio of the radius of a wheel to the ratio of an axle gives the mechanical advantage for that wheel and axle system

i.e Mechanical advantage = $\frac{radius of wheel}{radius of axle}$

for example if the radius of a wheel is 70m and the radius of an axle is 35m, the mechanical advantage for that machine is

M.A = 70/35 = 2

This implies that the outpu force  is 2 times that exerted by the input force