Laws of Motion ...

A block A with mass 100 kg is resting on another block B of mass 200 kg. As shown in figure a horizontal rope tied to a wall holds it. The coefficient of friction between A and 13 is 0.2 while coefficient of friction between B and the ground is 0.3. The minimum required force F to start moving B will be

To avoid slipping while walking on ice, one should take smaller steps because of the

A box is lying on an inclined plane what is the coefficient of static friction if the box starts sliding when an angle of inclination is 60^o

A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4. If a force F of 2.5 Newtons is applied on the block as shown in the figure, the frictional force between the block and the floor will be

Which one of the following is not used to reduce friction?

A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N. The coefficient of friction between wall and body is 0.3. Then the frictional force is equal

A boy of mass 40 kg is climbing a vertical pole at a constant speed. If the coefficient of friction between his palms and the pole is 0.8 and g = 10 m/s², the horizontal force that he is applying on the pole is

The maximum speed that can be achieved without skidding by a car on a circular unbanked road of radius R and coefficient of static friction µ, is

A car is moving along a straight horizontal road with a speed v_o. lithe coefficient of friction between the tyres and the road is µ, the shortest distance in which the car can be stopped is