Q3/ If the coefficients of friction between brake am and cylinder C is 0.3 and between cylinder C and the floor is 0.12, determine the minimum force P required to hold the cylinder from the rotation. Note that the weight of the cylinder Cis 1000 Ib and neglect the weight of the brake arm? 5-15 Higd 20 10" 1500n-

The coefficient of static friction for both wedge surfaces is 0.32 and that between the 36-kg concrete block and the 26° incline is 0.75. Determine the minimum value of the force P required to begin moving the block up the incline. Neglect the weight of the wedge. 36 kg 6.7 26° Answer: P = i

A handwritten solution would be well and good with fbd.

The force P = 150 N is applied to the 50-kg crate, which is stationary before the force is applied. Take ? = 30 Coefficient of static friction ?? = 0.3 and coefficient of kinetic friction ?? = 0.25 Determine the magnitude of the normal force, which is acting on the box. Express your answer in N to three significant figures. Do not include the units.

The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static friction between the 49-lb roller and the floor is s = 0.22, determine the maximum force Pthat can be applied to the handle, so that roller rolls on the ground without slipping. Assume the roller to be a uniform cylinder. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s2. 1.5 ft 30° Your Answer: Answer units

consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless when mass m2 moves a distance 4.94 m up the ramp, how far downward does mass m1 move? d= ?

Find the value s so that the worker can climb the ladder without causing it to slip. The weight of the worker is 90-kg and neglect the weight of the ladder. The ladder has a small roller at the top and at the ground the coefficient of static friction is 0.25. The center of mass of the worker is directly above her feet. B 4 m 1.5 m

A propeller shaft subjected to combined torsionand axial thrust is designed to resist a shear stress of57 MPa and a compressive stress of 105 MPa (see figure).(a) Determine the principal stresses and show themon a sketch of a properly oriented element.(b) Determine the maximum shear stresses andassociated normal stresses and show them on asketch of a properly oriented element.

If 7 =200N. determine the friction developed between the S0-kg crate and the ground. The coefficient of static friction between the crate and the ground is i, = 0.3.

The crate has a weight of 490 lb and a center of gravity at G rests on the floor for which the coefficient of static friction is equal to 0.35. If the force P = 300 lb is applied as shown in the figure below. The static friction force developed between the crate and the ground is. -2 ft. 2 ft -2 ft- 2 ft 4 ft 3 ft A Figure 1 Select one: O a. 234.5-Ib O b. 300-lb O c. 240-lb O d. 610 lb 3.