PVC plastic is often used for sewer pipe. If the outerdiameter of any pie ranges

Question

PVC plastic is often used for sewer pipe. If the outerdiameter of any pie ranges from 4 in.<= x<= 8 in, design atool that can be used by a worker to turn the pipe when it issubjected to a maximum anticipated ground resistance of 80 Ib-ft.The device is to be made of steel and should be designed so that itdoes not cut into the pipe and leave any significant marks on itssurface. Assume a worker can apply a maximum (comfortable) force of40 Ib, and take the minimum coefficient of static friction betweenthe PVC and the steel to be s = 0.35. Submit ascaled drawing of the device, and a brief paragraph to explain howit works based on a force analysis.

Explanation / Answer

45.6

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