Question

which wheel and axle image below has the effort at wheel? a. b.

Explanation:

In a wheel - and - axle, when the effort (\(F_E\)) is applied at the wheel, the force is exerted on the larger circular part (the wheel). In option a, the force \(F_E\) is clearly shown acting on the wheel. In option b, the force \(F_E\) is acting on the axle.

Answer:

a.