9709 P41 - Nov 2019 - Q5
3993
A small ring P is threaded on a fixed smooth horizontal rod AB. Three horizontal forces of magnitudes 4.5 N, 7.5 N and F N act on P (see diagram).
(i) Given that these three forces are in equilibrium, find the values of F and \(\theta\).
(ii) It is given instead that the values of F and \(\theta\) are 9.5 and 30 respectively, and the acceleration of the ring is 1.5 m s-2. Find the mass of the ring.
