A uniform beam AB AB\,AB has length 6 m and mass 10 kg. The beam rests horizontally on two supports X X\,X and YYY, where AX=2AX = 2AX=2 m and AY=5AY = 5AY=5 m.
Find the magnitude of the reactions of the support at X X\,X and YYY.
A block is now placed at A A\,A and the beam is on the point of tilting about XXX. Find the weight of the block.
Find the magnitude of the reaction at XXX.
53 exam-style questions on OCR A Level Maths 3.4 Moments (A-level only), covering 3.4.1 Moment of a force (A-level only), 3.4.2 Equilibrium of a rigid body (A-level only), and 3.4.3 Moments in static contexts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.