5. BIO The person in Figure P4.55 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 verti- cal forces exerted by the ground on his feet. Assum- ing he is at rest and the force exerted by the ground on the crutches acts along the crutches, determine 22.0° 22.0° Figure P4.55 (a) the smallest possible coefficient of friction between crutches and ground and (b) the magnitude of the Compression force supported by each crutch.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter4: The Laws Of Motion
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55. BIO The person in Figure
P4.55 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 verti-
cal forces exerted by the
22.0°
ground on his feet. Assum-
ing he is at rest and the
force exerted by the ground
on the crutches acts along
22.0
Figure P4.55
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.
Transcribed Image Text:55. BIO The person in Figure P4.55 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 verti- cal forces exerted by the 22.0° ground on his feet. Assum- ing he is at rest and the force exerted by the ground on the crutches acts along 22.0 Figure P4.55 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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