Slider block b moves to the right with a constant velocity of 300 mm/s.
determine

(a) the velocity of slider block a,
(b) the velocity of portion c of the cable,
(c) the velocity of portion d of the cable,
(d) the relative velocity of portion c of the cable with respect to slider block a.

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0