Physics (AS & A Level) · Oct / Nov 2021 · Paper 12 · Question 21

Three springs are arranged vertically as shown. Springs P and Q are identical and each has spring constant k. Spring R has spring constant 3k. What is the increase in the overall length of the arrangement when a force W is applied as shown?

1. A\frac{5W}{6k}
2. B\frac{4W}{3k}
3. C\frac{7}{2}kW
4. D4kW

As printed in the paper