Engineering Statics

E-24


Two 10° wedges of negligible weight are used to move and position the 400 lb block. Knowing that the coefficient of static friction at all surfaces of contact is 0.25, determine the smallest force P that should be applied as shwon to one of the wedges.

The FBD of the block and wedge are drawn separately.
The force equation in the x direction is written for the upper block.
The equation is simplified.
The force equation in the y direction is written for the upper block.
The equation is simplified.