A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see figure). The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp. The coefficients of friction between the crate and the surface of the ramp are

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
Section: Chapter Questions
Problem 63AP: A person doing a chin-up weighs 700 N, exclusive of the arms. During the first 25.0 cm of the lift,...
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A 1520-N crate is to be held in place on a
ramp that rises at 30.0° above the
horizontal (see figure). The massless rope
attached to the crate makes a 22.0° angle
above the surface of the ramp. The
coefficients of friction between the crate
and the surface of the ramp are
uk = 0.450
and
ls = 0.650
The pulley has no appreciable mass or
friction. What is the MAXIMUM weight w
that can be used to hold this crate
stationary on the ramp?
w = ?
22.0°
Crate
Ramp
30.0°
Transcribed Image Text:A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see figure). The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp. The coefficients of friction between the crate and the surface of the ramp are uk = 0.450 and ls = 0.650 The pulley has no appreciable mass or friction. What is the MAXIMUM weight w that can be used to hold this crate stationary on the ramp? w = ? 22.0° Crate Ramp 30.0°
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