Question 6
A non-uniform rod AB AB\,AB has length 5 m and mass 12 kg. It is hinged at A A\,A and held horizontally in equilibrium by a cable attached at BBB. The cable has tension 100 N and makes an angle of 60∘ 60^\circ\,60∘ above the rod, pulling upwards and towards AAA.
a.[3]
Find the distance of the rod's centre of mass from AAA.
b.[3]
Find the horizontal and vertical components of the force exerted by the hinge on the rod. Use g=9.8g=9.8g=9.8 m s−2^{-2}−2.
3.4 Moments (A-level only) Questions
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.