Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 3

A pendulum bob is held stationary by a horizontal force H. The three forces acting on the bob are shown in the diagram. The tension in the string of the pendulum is T. The weight of the pendulum bob is W. The string is held at an angle of 30° to the vertical. Which statement is correct?

1. AH = T \cos 30
2. BT = H \sin 30
3. CW = T \sin 30
4. DW = T \cos 30

As printed in the paper