The person in Figure P4.51 weighs 170 lb. Each crutch
Chapter 4, Problem 4.51(choose chapter or problem)
The person in Figure P4.51 weighs 170 lb. Each crutch makes an angle of 22.0with the vertical (as seen from the front). Half of the persons weight is supported by the crutches, the other half by the vertical forces exerted by the ground on his feet. Assuming that he is at rest and that the force exerted by the ground on the crutches acts along the crutches, determine (a) the smallest possible coefcient of friction between crutches and ground and (b) the magnitude of the compression force supported by each crutch.
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