The wheels, axle, and handles of a wheelbarrow weigh W = 56 N. The load chamber
ID: 1467113 • Letter: T
Question
The wheels, axle, and handles of a wheelbarrow weigh W = 56 N. The load chamber and its contents weigh WL = 610 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a force to the handles that is directed vertically upward. Consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper. Find the magnitude of the man’s force for both designs. (a) F = (b) F =
Explanation / Answer
a): F = (1/1.3m)(610N*0.4m + 56N*0.6m) = 213.53 N
b) : F = (1/1.3m)(56N*0.6m) =25.85 N
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