(i)[2]
Find the coefficient of friction for the block and the plane.
(ii)[4]
The block is now moving, and the string makes an angle of $30^\circ$ above the plane. The tension in the string is $25\,\text{N}$. Find the acceleration of the block.
Mathematics 9709 · AS & A Level · Newton's laws of motion
Newton's laws of motion — practice question
A block of weight $30\,\text{N}$ rests on a rough horizontal plane and is connected to a string. With the string horizontal and the tension equal to $24\,\text{N}$, the block is in limiting equilibrium.