A uniform seesaw LM LM\,LM of length 3 m is balanced on a central pivot. A child, Sam, of mass 24 kg sits at the end LLL. Another child, Jo, of mass 36 kg sits at a distance y y\,y m from the centre on the opposite side such that the seesaw remains horizontal.
Calculate the value of yyy.
56 exam-style questions on OCR (MEI) A Level Maths 3.6 Rigid Bodies (A-level only), covering 3.6.1 Moment of a force (A-level only), 3.6.2 Equilibrium of a rigid body (A-level only), 3.6.3 Turning effect of forces (A-level only), and 3.6.4 Weight acting through a point (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.