Two blocks are supported by a pulley along an incline as shown. The lower block B has a weight of 28 lbs and the higher block A has a weight of 15 lbs. Assume that there is friction between the blocks with Ha = 0.13 and assume friction between block Band the incline is also 4, = 0.13. Determine the angler for which motion is impending.

International Edition---engineering Mechanics: Statics, 4th Edition
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ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
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Chapter7: Dry Friction
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Two blocks are supported by a pulley along an incline as shown. The lower block B has a weight of 28 lbs
and the higher block A has a weight of 15 lbs. Assume that there is friction between the blocks with
H3 = 0.13 and assume friction between block B and the incline is also 4, = 0.13. Determine the angle r
for which motion is impending.
151b
2816
A
Tension in block A as a function of z can be written as TA
%3|
Tension in block B as a function of z can be written as TR
Thus, impending motion is at z =
degrees.
Transcribed Image Text:Two blocks are supported by a pulley along an incline as shown. The lower block B has a weight of 28 lbs and the higher block A has a weight of 15 lbs. Assume that there is friction between the blocks with H3 = 0.13 and assume friction between block B and the incline is also 4, = 0.13. Determine the angle r for which motion is impending. 151b 2816 A Tension in block A as a function of z can be written as TA %3| Tension in block B as a function of z can be written as TR Thus, impending motion is at z = degrees.
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