A diagonal bar CD was welded to the AB beam supported at its ends. Two perpendicular inertias, each with the value P, are applied to the bar ends, providing a pair of forces. Moreover, a vertical force Q acts on the beam. Determine the reaction of supports A and B. Do not let go of the dead weight of the beam and the bar. Given: P = 200N, Q = 100N, l = 2m, r = 1m, a = 0.5m
Correct RBY = - 75N, RA = 175N

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?