A body weighing 100 lbs rests on an inclined plane as shown. The coefficient of static friction between the body and the plane is 0.40. Compute the force P that will cause impending motion (a) Up the inclined plane (b) Down the inclined plane Compute the horizontal force P required to cause motion to impend up the plane for the 100−lb block shown. The coefficient of static friction between the block and plane is 0.25.
![A 120 lb block rests on a horizontal floor, as shown. The coefficient of static friction between the block and the floor is 0.20. sketch the free body diagram for the block impending motion with P pulling on the block as the diagram shown calculate the pulling force P that will cause block impending motion to the left. [lb].](https://www.doubtrix.com/uploads/editor/4463130650TBjoyRAiGP.png)
