A uniform horizontal beam of length 2.0 m has a weight of 80 N acting at its centre. It is pivoted at its left end. A 120 N load hangs 1.5 m from the pivot. What upward force at the right end maintains rotational equilibrium?
90 N90\ \mathrm{N}90 N
260 N260\ \mathrm{N}260 N
130 N130\ \mathrm{N}130 N
100 N100\ \mathrm{N}100 N
102 exam-style questions on Edexcel GCSE Physics 9.2 Moments, covering 9.2.1 Rotational effects of forces and moments, 9.2.2 The principle of moments, and 9.2.3 Levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.