4 In this question, the \(x\) and \(y\) directions are horizontal and vertically upwards respectively.
A particle of mass 1.5 kg is in equilibrium under the action of its weight and forces \(\mathbf { F } _ { 1 } = \binom { 4 } { - 2 } \mathrm {~N}\)
and \(\mathbf { F } _ { 2 }\). and \(\mathbf { F } _ { 2 }\).
- Find the force \(\mathbf { F } _ { 2 }\).
The force \(\mathbf { F } _ { 2 }\) is changed to \(\binom { 2 } { 20 } \mathrm {~N}\).
- Find the acceleration of the particle.