Physics · Oct / Nov 2020 · Paper 12 · Question 1

A heavy nail is fixed firmly to a wall. It is pulled by a string at 40° to the vertical. The nail does not move. Three forces act on the nail: its weight W, the tension T in the string, the force R exerted by the wall. Which diagram, drawn to scale, represents the three forces?

1. ADiagram A: T pointing up-right, W pointing down, R pointing left
2. BDiagram B: T pointing down-left, W pointing down, R pointing right
3. CDiagram C: T pointing up-right, W pointing down, R pointing down-left
4. DDiagram D: T pointing down-left, W pointing down, R pointing up-right

As printed in the paper