A uniform rod AB AB\,AB has length 4 m and mass 6 kg. The rod rests horizontally on two supports P P\,P and QQQ, where AP=1AP = 1AP=1 m and AQ=3AQ = 3AQ=3 m.
Find the magnitude of the reactions of the support at P P\,P and QQQ.
A block is now placed at B B\,B and the rod is on the point of tilting about QQQ. Find the weight of the block.
Find the magnitude of the reaction at QQQ.
