8-118. A disk having an outer diameter of 120 mm. fits loosely over a fixed shaft having a diameter of 30 mm. If the coefficient of static friction between the disk and the shaft is Hy = 0.15, determine the smallest vertical force P, acting at the rim, which must be applied to the disk to cause it to slip over the shaft. The disk has a mass of 50 kg. 120 mm - 30 mm Prob. 8–118

8-82. Determine the horizontal force P that must be applied perpendicular to the handle of the lever at A in order to develop a compressive force of 12 kN on the material. Each single square- threaded screw has a mean diameter of 25 mm and a lead of 7.5 mm. The coefficient of static friction at all contacting surfaces of the wedges is µ = 0.2, and the coefficient of static friction at the screw is μ's = 0.15. Problems 8-81/82 WA B 15° C 15° 250 mm

Couple forces of F= 35N are applied to the handle of the machinist's vise. The guid at B is smooth. The Single square threaded screw has a mean radius of 6 mm and a lead of 8 mm, and the coefficient of static friction is us=0.27

a) The 150-kg uniform crate rests on the 10-kg cart (see Figure 1). Determine the maximum force P that can be applied to the handle without causing the crate to slip or tip on the cart. The coefficient of static friction between the crate and cart is µs = 0.2. 0.5m- 1 Prob. 17-38 Figure 1 b) Now, consider the scenario shown in Figure 2. Let's assume the maximum force (P) you calculated in the previous part was intended for a person with the height mentioned in Figure 2a. However, the person in Figure 2b is taller than the one mentioned in Figure 2a. In this case, determine the maximum allowable force (P) for the person from Figure 2b to ensure that the individual can perform the task safely without causing the crate to slip or tip on the cart. Given the situation, who has the advantage: the person from Figure 2a or Figure 2b? Additionally, suggest a quick and effective solution that can be implemented to accommodate both individuals equally while performing the task. 1.4m UN Figure 2…

A collar bearing C is supported by a fixed annular plate. The axial load on the shaft is F = 600 N, and the coefficient of kinetic friction between the collar and the plate is μ = 0.3. The area of contact has an inside diameter of D₁ = 60 mm, and the outside diameter is D₂ = 180 mm. Determine the torque required to rotate the shaft at a constant rate. C F M C F D₁ - D₂ M

The 90-lb force P is applied to the 210-lb crate, which is stationary before the force is applied. Determine the magnitude and direction of the friction force Fexerted by the horizontal surface on the crate. The friction force is positive if to the right, negative if to the left. Assume 4, = 0.45, µz = 0.35. Answer: F = 94.5 Ib

2. The wedge blocks are used to hold the specimen in a tension testing machine. Determine the design angle 0 of the wedges so that the specimen will not slip regardless of the applied load. The coefficients of static friction are LA at A and l8 at B. Neglect the weight of the blocks. B Given: HA = 0.1 HB = 0.6 %3D

Hello, can someone help me with this problem please. Determine the minimum force P to prevent the 30-kg rod AB from sliding. The surface of contact at B is smooth, while the coefficient of static friction between the rod and the wall at A is μs= 0.2.

The tractor has a weight of 13500 lb and the coefficient of rolling resistance is a = 1.9 in . Determine the force P needed to overcome rolling resistance at all four wheels and push it forward.

The uniform rod has a mass of 13.09 kg and rests on the inside of the smooth ring at B and on the ground at A. If the rod is on the verge of slipping, determine the coefficient of static friction between the rod and the ground.