Q1
convert the bearings to azimuths from north and compute
theangle . smaller then 180 degree. between successive
bearings.
n66 degree 17' 36"e, s44 dgree 22'34"e, s8 degree 23' 42"w, and
n57 degree 08' 55"w.

q2
compute theazimuth from north of lin cd . ( azimuths of ab
arealso from north.)
bearing ab= s59 degree 48' 23"w; angle to the right
abc = 205 degree 56' 11" , bcd= 195 degree 23' 08".

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.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.