2. A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley B. Assume the belt tension on the loose side at B is 15 percent of the tension on the tight side. а. Determine the tensions in the belt on pulley B, 10 in assuming the shaft is running at a constant speed. 18 in b. Find the magnitudes of the bearing reaction forces, assuming the bearings act as simple 12 in T, "suoddns

Force between A and B: 200lb Angle on D: 35 deg Angle on C: 50 deg

The operation of the exhaust and intake valves in an automobile engine consists of cam C, pushrod DE, rocker arm EFG which is hinged at F and on a spring , and valve V. If the compression on the spring is 20 mm when the valve is open, as indicated in the figure, determine the normal force acting on the lobe of the cam at C. Assume that the cam and the bearings at H, I, and J are smooth. The spring has a stiffness of 300N/m. draw the free body diagram

A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from amotor through a belt with the belt tensions shown. The power is transmitted through the shaft anddelivered to the belt on pulley B. Assume the belt tension on the loose side at B is 15 percent ofthe tension on the tight side.(a) Determine the tensions in the belt on pulley B, assuming the shaft is running at a constantspeed.(b) Find the magnitudes of the bearing reaction forces, assuming the bearings act as simplesupports.(c) Draw shear-force and bending-moment diagrams for the shaft. If needed, make one set for thehorizontal plane and another set for the vertical plane.(d) At the point of maximum bending moment, determine the bending stress and the torsionalshear stress.(e) At the point of maximum bending moment, determine the principal stresses and themaximum shear stress.