(i)[5]
Find the coefficient of friction for the box on the plane.
(ii)[4]
While the box is travelling at $2.5\,\text{m s}^{-1}$, the pulling force is taken away. Find the distance travelled by the box from the moment the pulling force is removed.
Mathematics 9709 · AS & A Level · Forces and equilibrium
Forces and equilibrium — practice question
A small box of mass $5\,\text{kg}$ is dragged at a steady speed of $2.5\,\text{m s}^{-1}$ down the line of greatest slope on a rough plane inclined at $10^{\circ}$ to the horizontal. The pulling force is $20\,\text{N}$ and acts downward, parallel to the plane’s line of greatest slope.