The tractor is used to push the pipe of weight W. To do this it must overcome the frictional forces at the ground, caused by sand. Assuming that the sand exerts a pressure on the bottom of the pipe as shown, and the coefficient of static friction between the pipe and the sand is μs, determine the force required to push the pipe forward. Also, determine the peak pressure p0.

Given:

W = 1500 lb

μs = 0.3

L = 12 ft

r = 15 in

Transcribed Image Text:

-p= Po cose Po