A light rod AB AB\,AB of length 3 m is freely pivoted at AAA.
A force of magnitude 40 N is applied to the rod at BBB. The force acts in the vertical plane containing the rod and makes an angle of 30° 30°\,30° with the rod.
Find the magnitude of the moment of this force about AAA.
53 exam-style questions on AQA A Level Maths 3.4 S: Moments (A-level only), covering 3.4.1 Moments in static contexts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.