In the hanger shown, the upper portion of link ABC is 3/8 in. thick and the lower portions are each ¼ in. thick. Epoxy resin is used to bond the upper and

lower portions together at B. The pin at A is of 3/8 -in. diameter while a ¼ -in.

diameter pin is used at C. Determine (a) the shearing stress in pin A, (b) the

shearing stress in pin C, (c) the largest normal stress in link ABC, (d) the

average shearing stress on the bonded surfaces at B

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented