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

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

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