(a)[2]
Force is a vector quantity. State three other vector quantities.
(b(i))[1]
Use Fig. 3.2 to estimate the value of Y when X = 0.
(b(ii))[2]
State and explain the value of \theta for the case X = 0.
(b(iii)1)[2]
X is raised to 160\,\text{N}. Use resolution of forces to calculate angle \theta.
(b(iii)2)[2]
X is raised to 160\,\text{N}. Use resolution of forces to calculate the magnitude of Y.
(c)[1]
As X increases, \theta decreases. Explain why equilibrium is impossible when \theta = 0.
(b(iii).1)[2]
The magnitude of X has been increased to 160\,\text{N}. Use resolution of forces to calculate \theta.
(b(iii).2)[2]
X is increased to 160\,\text{N}. Use resolution of forces to calculate the size of Y.