Chapter 8, Problem 96P

The coefficient of static friction between the block and the plane is μs=0.2, and between the rope and the drum D is μ′s=0.3. (Figure 1) Determine the maximum value of weight W which may be applied without causing the 75-lb block to slip. Determine the minimum value of weight W which may be applied without causing the block to slip.

A 150-lb block rests on a horizontal floor. The coefficient of friction between the block and the floor is 0.30. A pull of 40 lb, acting upward at an angle of 30° to the horizontal, is applied to the block. Determine whether or not the block will slide. - Draw Free-body diagram  - Solve most simple way  - use the formula Fmax= Ms (N)

Determine the minimum force P to prevent the 30-kg rod AB from sliding. The contact surface at B is smooth, whereas the coefficient of static friction between the rod and the wall at A is = 0. - 4m -

The uniform 20-lb ladder rests on the rough floor for which the coefficient of static friction is us=0.8 and against the smooth wall at B. Determine the horizontal force P the man must exert on the ladder in order to cause it to move.

Determine the angle of contact () in degrees of the belt supported on a pulley if the belt is having a load of 98 N on the tight side and a load of 60 N on the slack side. Take the coefficient of friction as 0.25.

The coefficient of static friction for both wedge surfaces is 0.30 and that between the 40-kg concrete block and the 24° incline is 0.65. Determine the minimum value of the force P required to begin moving the block up the incline. Neglect the weight of the wedge. 40 kg 3.7 24 Answer: P = N

The drum has a weight of 110 lb and rests on the floor for which the coefficient of static friction is μs = 0.30. Assume the center of gravity of the drum is located at its center. Pt. A : If a = 3 ft and b = 4 ft, determine the smallest magnitude of the force P that will cause the drum to start sliding.   Pt. B: If a = 3 ft and b = 4 ft, determine the smallest magnitude of the force P that will cause the drum to start tipping. Pt. C : Based on the results in the previous two parts, the impending motion of the drum is....   Slipping or Tipping?

PROBLEM 1: Two blocks A and B, each having a mass of 5 kg, are connected by the linkage shown in the figure. If the coefficient of static friction at the contacting surfaces is μ = 0.50, determine the largest force P, in N, that can be applied to pin C of the linkage: (a) without causing movement of block A; (b) without causing movement of block B; and (c) without causing movement to both blocks A and B. P 30° C 30° A 30°

The man having a weight of 200 lb pushes horizontally on the crate as shown in the photo. The coefficient of static friction between the 450-lb crate and the floor is μs = 0.3 and between his shoes and the floor is μ's = 0.6. Determine if the man can move the crate. Solve the parts below.  a) Determine the force that tends to move the man to the right. Express your answer to three significant figures and include the appropriate units.  b) Determine the magnitude of the maximum force due to friction that opposes the tendency of the man's motion. Express your answer to three significant figures and include the appropriate units.