Physics (AS & A Level) · May / June 2020 · Paper 13 · Question 13

A non-uniform rod has a mass of 100 g and a length of 50 cm. It is supported by a chain at its midpoint. The rod is held in equilibrium by having a mass of 60 g suspended from its right-hand end, as shown. The centre of gravity of the rod is a distance d from its left-hand end. What is the value of d?

1. A10 cm
2. B15 cm
3. C25 cm
4. D40 cm

As printed in the paper