A bicycle moves forward 4.0 m when the pedals are rotated through a distance of 1.0 m. What is the IMA (Ideal mechanical advantage) of this bicycle?

IMA =  0.25

Explanation:

Given the following data;

Input distance = 1m

Output distance = 4m

To find the ideal mechanical advantage;

Mathematically, IMA is given by the formula;

NB: The ideal mechanical advantage has no units.

Substituting into the equation, we have;

IMA = 0.25

Therefore, the ideal mechanical advantage (IMA) of this bicycle is 0.25.

b.. i believe would be the right one sorry if im wrong.