A man is running along a road with speed u. On his chest there is a paper of mass m and area S. There is a wind blowing against the man at speed V. Density of air is `rho`. Assume that the air molecules after striking the paper come to rest relative to the man. Find the minimum coefficient of friction between the paper and the chest so that the paper does not fall ?

A plank of mass M is placed on a rough horizontal force F is applied on it A man of mass m rens on the plank find the acceleration of the man so that the plank does not move on the surface . The coefficent of friction between the plank and the surface is mu Assume that the man does not slip on the plank

What is the minimum stopping distance for a vehicle of mass m moving with speed v along a level road. If the coefficient of friction between the tyres and the road is mu .

What is the minimum stopping distance for a vehicle of mass m moving with speed v along a level road. If the coefficient of friction between the tyres and the road is mu

The stopping distance for a vehicle of mass M moving with a speed v along a level road, will be - (µ is the coefficient of friction between tyres and the road)

A man is running on the ground .It is known that the coefficient of friction between the man and the ground is mu . Then which of the following statements is correct

A man runs towards a mirrorr at a speed 15m//s. The speed of the image relative to the man is

A man runs towards plane mirror at a speed of 15 m/sec. What is the speed of his image?

The air of density rho and moving with a velocity v strikes perpendicular the inclined surface of area A and of a wedge kept on a horizontal surface. The mass of the wedge is m . Assuming the collisions to be perfectly inelastic, the minimum value of the coefficient of friction between the wedge and the ground so that the wedge does not move is (Assume mass of particles of air is negligible)

A plank of mass 3m is placed on a rough inclined plane and a man of mass m, the coefficient of friction between the board and inclined plane is mu = 0.5 , the minimum acceleration of man so that plank does not slide is :

A man runs along a straight road. Naturally he leans a little in the forward direction. The angle with the horizontal line and the line joining the man's centre of mass with the point of support is alpha ( assume mass per unit length of the man is uniform ) . The man will not slip if the coefficient of friction mu satisfies the conditon.