A light display arm projects horizontally to the right from a pivot. An upward force of 14 N is applied 0.35 m from the pivot. A downward force of 8.0 N is applied 0.45 m from the pivot. What is the resultant moment?
3.6 N m3.6\ \mathrm{N\,m}3.6 Nm clockwise.
1.3 N m1.3\ \mathrm{N\,m}1.3 Nm anticlockwise.
4.9 N m4.9\ \mathrm{N\,m}4.9 Nm anticlockwise.
2.7 N m2.7\ \mathrm{N\,m}2.7 Nm anticlockwise.
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.