Mathematics 9709 · AS & A Level · Forces and equilibrium
Forces and equilibrium — practice question
Particle $P$ has mass $0.2\,\text{kg}$ and is initially at rest on a rough horizontal plane. A horizontal force of $1.2\,\text{N}$ acts on $P$.
(a)[3]
If $P$ is in limiting equilibrium, determine the coefficient of friction between $P$ and the plane.
(b)[4]
Instead, if the coefficient of friction between $P$ and the plane is $0.3$, determine the distance travelled by $P$ during the third second of its motion.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Normal reaction correctly found as $R=0.2g$” …