College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter11: Fluid Statics
Section: Chapter Questions
Problem 36PE: What fraction of ice is submerged when it floats in freshwater, given the density of water at 0°C is...
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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.
Transcribed Image Text:22.0°
22.0°
Figure P4.49
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