15° 00 30 Prob. 8-88
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
The uniform concrete pipe has a weight of 800 lb
and is unloaded slowly from the truck bed using the rope
and skids shown. If the coefficient of kinetic friction
between the rope and pipe is μk = 0.3, determine the force
the worker must exert on the rope to lower the pipe at
constant speed. There is a pulley at B, and the pipe does not
slip on the skids. The lower portion of the rope is parallel to
the skids.
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