Physics (AS & A Level) · Oct / Nov 2016 · Paper 12 · Question 17

A rigid cross-shaped structure having four arms PO, SO, QO and RO, each 1.00 m long, is pivoted at O. Forces act on the ends of the arms and on the midpoints of the arms as shown. What is the magnitude of the resultant moment on the structure about O?

1. A45 N m
2. B90 N m
3. C120 N m
4. D190 N m

As printed in the paper