Problem 1.7-5 The force in the brake cable of the V-brake system shown in the figure is T- 200 N. The pivot pin at A has diameter d,-6 mm and length Lp-16 mm. Use dimensions shown in the figure. Neglect the weight of the brake system. (a) Find the average shear stress 7er in the pivot pin where it is anchored to the bicycle frame at B. (b) Find the average bearing stress aaver in the pivot pin over segment AB.

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Consider the two bars of identical material with their elastic modulus E as shown in Figure below. Both bars have the same circular cross-section with diameter of d. The length of the longer bar is 2L and the length of the shorter bar is L. The angle between the bars is B. The system is subjected to a vertical force acting at point Pas shown in the figure with a magnitude of F. Calculate horizontal and vertical components of the displacement of point P. Use engineering notation (ENG display mode on scientific calculators) with 3 significant figures after the decimal point. E (psi) 1.50E+06 d (in) 1.25 L (in) 12 Beta (degrees) 30 F (Ibf) 110 F P L 2L

Q3 The figure shows a round shaft from a gear transmission. Gears are mounted at points A, C, and E. Supporting bearings are at B and D. The forces transmitted from the gears to the shaft are shown, all acting downward. Compute the maximum stress due to bending in the shaft, accounting for stress concentrations. calculate the safety factor for the material selected.if martial 4150 OQT 1300 force 1 (f1)=9.5 kn ,Force 2(f2)=13.5Kn ,Force3 (f3)=18Kn

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.