Physics (AS & A Level) · May / June 2021 · Paper 13 · Question 14

A book of weight W has a rectangular shape and is of uniform thickness. The book is held in a vertical plane so that the longer sides of the book are vertical, as shown. [diagram: rectangle of width a and height b, held by a hand at the top right corner] Which expression gives the approximate torque exerted by the hand on the book?

1. AWa/2 clockwise
2. BWb/2 anticlockwise
3. CWa clockwise
4. DWb anticlockwise

As printed in the paper