Problem 9
the driver of the car maintains a constant speed of
40 m/s. determine the angular velocity of the
camera tracking the car when theta = 15°.
r = (100 cos(2theta) ) m

[hibbeler: 12-191: theta' = 0.302 rad/s (or
34,61 deg/s)]
i tried many methods and none worked for me.

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid