If the truck travels at a constant speed of vT. = 6 ft/s, determine the speed of the -cr...

If the truck travels at a constant speed of v_T. = 6 ft/s, determine the speed of the -crate for any angle of the rope. The rope has a length of 100 ft and passes over a pulley of negligible size at A. Hint: Relate the coordinates x_T and x_C to the length of the rope and take the time derivative. Then substitute the trigonometric relation between x_C and θ.