Home
Class 11
PHYSICS
A block of height h is projected along a...

A block of height `h` is projected along a rough surface of coefficient of friction `mu`. Find the point of application of the normal force on the block for `mu_(k) = 0.5`.

Text Solution

Verified by Experts

Problem solving strategy : If we take reference point at `CM`, at any instant torque of weight is zero. We need to consider torque due to frictional and normal forces only.

Let the line of action of normal reaction be at a distance `x` from `CM`. Then
`vec tau_(CM) = N_(x) - fh = Nx - mu_(k) Nh` or `x = mu_(k) h`.
Promotional Banner

Similar Questions

Explore conceptually related problems

Two blocks, each of mass m are attached with a massless and inextensible string. One of the blocks is placed on the rough horizontal surface of a table for which coefficient of friction mu . Find out the force exerted by the table on the block if mu gt 1 .

A body is projected up along a rough inclined plane of inclination 45 ^@ . The coefficient of friction is 0.5. Then the retardation of the block is

A cubical block of side L rests on a rough horizonta surface with coefficient of friction mu . A horizontal force F is applied on the block as shown. If the coefficient of friction is sufficiently high so that the block does not slide before toppling, the minimum force required to topple the block is

A block of mass m is placed on a rough horizontal surface. The coefficent of friction between them is mu . An external horizontal force is applied to the block and its magnitude is gradually increased. The force exerted by the block on the surface is R.

In the fig. as shown mass of each block is same. The surface are rough with coefficient of friction mu . The block B moves with acceleration a . The frictional force on the block C is kxxmu ma . Calculate the value of K

A block of mass m is lying on horizontal surface of coefficient of friction mu. A force is applied to the block at an angle theta with the horizontal. The block will move with a minimum force F if

A cubical block of side L rests on a rough horizontal surface with coefficient of friction mu . A horizontal force F is applied on the block as shown. If the coefficient of frictions sufficienty high so that the block does not slide before toppling, the minimum force required to topple the block is : .

A block of mass 10kg is placed on a rough horizontal surface having coefficient of friction mu=0.5 . If a horizontal force of 100N is acting on it, then acceleration of the will be.

A block of mass M is being pulley along horizontal surface .The coefficient of friction the block and the surface is mu If another block of mass M//2 is placed on the block and it is pulled is again pulled on the surface , the coefficient of friction the block and the surface will be