Physics (AS & A Level) · Oct / Nov 2022 · Paper 11 · Question 11

A square board, of side length x, hangs freely from a nail P, as shown. The board has uniform thickness and is made from material of uniform density. A second square board, of side length 2x, is made of the same material and has the same thickness as the original board. This second board is then hung from a nail Q. Nails P and Q are at the same height. What is the vertical distance between the positions of the centres of gravity of the two boards?

1. A0
2. Bx/√2
3. Cx
4. Dx√2

As printed in the paper