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. Please help

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor