(i)[2]
Show that the tension in the string has magnitude $8\,\text{N}$.
(ii)[2]
Calculate the particle’s speed.
Mathematics 9709 · AS & A Level · Probability
Probability — practice question
A particle $P$ with mass $0.4\,\text{kg}$ is connected to a fixed point $A$ by a light inextensible string. The string makes an angle of $60^\circ$ to the vertical. $P$ travels at constant speed in a horizontal circle of radius $0.2\,\text{m}$. The centre of the circle lies vertically below $A$ (see diagram).