Problem 15. A block of mass m is pushed against a wall by a force F1 that makes an angle 0 = 50° with the horizontal. The coefficient of static

friction between the block and wall is 0.25. (a)Determine the possible values for the magnitude of F that allow the block to remain stationary.(b) Describe what happens if |F|| has a larger value and what happens if it is smaller.

Fig: 1

Fig: 2