Chapter 5, Problem 66P

A block of mass 3.00 kg is pushed up against a wall by a force $\stackrel{\to }{P}$ that makes an angle of θ = 50.0° with the horizontal as shown in Figure P5.34. The coefficient of static friction between the block and the wall is 0.250. (a) Determine the possible values for the magnitude of $\stackrel{\to }{P}$ that allow the block to remain stationary. (b) Describe what happens if $\left|\stackrel{\to }{P}\right|$ has a larger value and what happens if it is smaller. (c) Repeal parts (a) and (b), assuming the force makes an angle of θ = 13.0° with the horizontal.

Figure P5.34