A uniform in shape and mass pipe strut BDC is loaded and supported as shown. The mass of the strut is m kg; the acceleration due to gravity is g m/s?. The strut is supported by a smooth pin at point C and a cable at point B. There is an external force P (downward) at point D. The cable is light and does not stretch. a) Find the unknown reaction forces (reaction at the pin and tension in the cable) in terms of given parameters like L, H, m, g, and P. b) Using the following numerical parameter values: the mass of the strut is 50 kg, the acceleration due to gravity is 9.81 m/s?, L is 0.8 m, H is 1 m, and P is 750 N, calculate the magnitude and direction of the force exerted by the pin on the strut at point C and the tension force in cable AB. L L A Cable y H C P