ure 30° РА Ꮎ 1 of
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...
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A 160-lb block is pulled up by a constant force P through a cable to move up
the inclined surface with a constant acceleration of a = 6 ft/s2. The coefficient
of kinetic friction between the block and the inclined surface is HK = 0.25.
The angle between the cable and inclined surface as shown is 0= 40°.
Neglect size of the block, (Figure 1)
Figure
1 of 1
30°
Part A
Determine the magnitude of the force P applied on the cable..
Express your answer to three significant figures and include the
appropriate units.
O
Ii μÀ
?
P =
Value
Units
Submit Request Answer
Part B
Determine the normal force N exerted on the block from the inclined surface.
Express your answer to three significant figures and include the
appropriate units.
?
N = Value
Units
Submit Request Answer
μÅ
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