J. The system shown has a roller at A and a smooth collar at C, with dimensions, a-8.5ft, b-6.7ft. The loads applied are a Force, F-77lb, and a Moment, M-398ft lb CCW. Calculate the support reactions at A and C. (state the direction of the forces at A & C) F M Frictionless Collar K. A bent pipe is connected by a thrust bearing and a cable as shown. If a Force, F-2091b, and a Moment, M- 642ft-lb (CW in y direction), are applied, what are the reactions at the thrust bearing and in the cable. The dimensions shown are a 9.5ft., b-7.3ft, and c-5.9ft. Cable M X

Repeat Problem 11.3-9. Use two C 150 × 12.2 steel shapes and assume that E = 205 GPa and L = 6 m.

The inclined beam represents a ladder with the Following applied loads: the weight (W) of the house painter and the distributed weight (u) of the ladder itself. Find support reactions at A and B: then plot axial force (N), shear (V), and moment (M) diagrams. Label all critical N, V, and M values and also the distance to points where any critical ordmates are zero. Plot N, V, and M diagrams normal to the inclined ladder. Repeat part (a) for the case of the ladder suspended from a pin at B and traveling on a roller support perpendicular to the floor at A.

Find support reactions at 4 and Band then use the method of joints to find all member forces. Let b = 3 m and P = 80 kN.

Compute the tension TAE in Sample Problem 5.7 using one scalar equilibrium equation.

A spray nozzle for a garden hose requires under a water pressure force fp= 30 lb at C (see figure a force F = 5 lb to open the spring-loaded spray part c). Use dimensions given in figure part a chamber AB. The nozzle hand grip pivots about a (a) Find the force in the pin at O due to applied force F pin through a flange at O. Each of the two flanges force F has a thickness t = 1/16 in., and the pin has a diam- (b) Find average shear stress taver and bearing stress eter dp = 1/8 in. (see figure part a). The spray nozzle is attached to the garden hose with a quick release fitting at B (see figure part b). Three brass balls Find the average shear stress Ta,„ in the brass (diameter db= 3/16 in.) hold the spray head in place retaining balls al C due to water pressure Force fP

A bungee jumper having a mass of 55 kg leaps from a bridge, braking her fall with a long elastic shock cord having axial rigidity EA = 2.3 kN (see figure). If the jumpoff point is 60 m above the water, and if it is desired to maintain a clearance of 10 m between the jumper and the water, what length L of cord should be used?

Repeat Problem 3.3-1, but now use a circular tube with outer diameter d0= 2.5 in. and inner diameter di= 1.5 in.

The boom 4C is supported at 4 by a ball-and-socket joint and by two cables BDC and CE (figure 3). Cables BDC is continuous and passes over a frictionless pulley at D. Calculate the tension in the cables and the reactions at A if a crate, having a weight of 80 N, is suspended from the boom. Note: For a ball and socket joint, there are three force reaction (As, Ay, A:.).

The boom 4C is supported at 4 by a ball-and-socket joint and by two cables BDC and CE (figure 3). Cables BDC is continuous and passes over a frictionless pulley at D. Calculate the tension in the cables and the reactions at 4 if a crate, having a weight of 80 N, is suspended from the boom. Note: For a ball and socket joint, there are three force reaction (A, Ay, A:). 30 m. 6 m 4 m 8 m Figure 3