I cant get the answer in the back of the book and would appreciate a second opinion! A loft door OA of weight 100N is propped open at 50 degrees to the horizontal by a strut AB. the door is hinged at O; OA=OB=1metre. Assuming the mass of the strut can be neglected and that the weight of the door acts through the midpoint of OA, find: a) the force in the strut b) the reaction at the hinge. Book says 35.5 and 69.5 - I got 32.6 and 77.9 !