Answered: 22.0° 22.0° Figure P4.49

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

The person in Figure P4.49 weighs 170. lb. Each
crutch makes an angle of 22.0° with the vertical (as seen from the
front). Half of the person’s weight is supported by the crutches,
the other half by the vertical forces exerted by the ground on his feet. Assuming he is at
rest and the force exerted by
the ground on the crutches
acts along the crutches, determine
(a) the smallest possible
coefficient of friction between
crutches and ground and
(b) the magnitude of the compression
force supported by
each crutch.

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