Stopping Of Block Due To Friction - Practice Questions & MCQ

A block of mass 10 kg starts sliding on a surface with an initial velocity of $9.8 \mathrm{~ms}^{-1}$. The coefficient of friction between the surface and block is 0.5. The distance covered by the block before coming to rest is: $\left[\right.$ use $\left.\mathrm{g}=9.8 \mathrm{~ms}^{-2}\right]$

A bag is gently dropped on a conveyor belt moving at a speed of $2 \mathrm{~m} / \mathrm{s}$. The coefficient of friction between the conveyor belt and bag is 0.4 . Initially, the bag slips on the belt before it stops due to friction. The distance travelled by the bag on the belt during slipping motion is: [Take $\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{-2}$ ]

A block of mass M slides down on a rough inclined plane with constant velocity. The angle made by the incline plane with horizontal is $\theta$. The magnitude of the contact force will be:

As shown in the figure a block is given an initial velocity of $20 \mathrm{~m} / \mathrm{s}$ in upward direction. What is the distance covered by the block to come to rest? $(g=10 \mathrm{~m} / \mathrm{s})$

 A small ball of mass m starts at point A  with speed v_o and moves along a frictionless track AB as shown. The track BC has coefficient of friction $\mu$. The ball comes to a stop at C after traveling a distance L which is :

Three masses $\mathrm{M}=100 \mathrm{~kg}, \mathrm{~m}_1=10 \mathrm{~kg}$ and $\mathrm{m}_2=20 \mathrm{~kg}$ are arranged in a system as shown in figure. All the surfaces are frictionless and strings are inextensible and weightless. The pulleys are also weightless and frictionless. A force F is applied on the system so that the mass $\mathrm{m}_2$ moves upward with an acceleration of $2 \mathrm{~ms}^{-2}$. The value of F is : $\left(\right.$ Take $\left.\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$

A cubical box of side 'a' sitting on a rough table top is pushed horizontally with a gradually increasing force until the box moves. If the force is applied at a height from the tabletop which is greater than a critical height H, the box topples first. If it is applied at a height less than H, the box starts sliding first. Then the coefficient of friction between the box and the tabletop is

A cubical box of side a sitting on a rough table-top is pushed horizontally with a gradually increasing force until the box moves. If the force is applied at a height from the tabletop which is greater than a critical height H,the box topples first. If it is applied at a height less than H, the box starts sliding first . Then the coefficient of friction between the box and the tabletop is

A box when dropped from a certain height reaches the ground with a speed $\nu$. When it slides from rest from the same height down a rough inclined plane inclined at an angle $45^{\circ}$ to the horizontal, it reaches the ground with a speed $\nu / 3$. The coefficient of sliding friction between the box and the plane is (acceleration due to gravity is $10 \mathrm{~ms}^{-2}$ )

A force of 100 N is just sufficient to pull a block of mass $10 \sqrt{3} \mathrm{~kg}$ on rough horizontal surface. What is angle friction? ( $\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ )