A mechanic uses a torque wrench to tighten a spark plug on an engine. The wrench has a length of 25 cm, and the mechanic applies a force of 40 N perpendicular to the end of the handle.
Which of the following options correctly expresses the magnitude of the moment exerted on the spark plug in SI base units?
10 kg m s−210\text{ kg m s}^{-2}10 kg m s−2
1000 kg m2s−21000\text{ kg m}^2\text{s}^{-2}1000 kg m2s−2
10 kg m2s−210\text{ kg m}^2\text{s}^{-2}10 kg m2s−2
1000 kg m s−21000\text{ kg m s}^{-2}1000 kg m s−2
9 exam-style questions on Edexcel GCSE Physics 9.2 Moments (physics only). Each one has a worked solution and a mark scheme showing where the marks go.