A 3.0kg block has a speed of `2m//s` A and `6m//s` at B. If the distance from A and B along the curve is 12m, how large a frictional force acts on it ? Assuming the same friction, how far from B will it stop ?

A turn of radius 20 m is banked for the vehicle of mass 200 kg going at a speed of 10 m//s . Find the direction and magnitude of frictional force (a) 5 m//s (b) 15 m//s Assume that friction is sufficient to prevent slipping. (g=10 m//s^(2))

A ball moves along a curved path of radius 5m as shown in figure. It starts from point A and reaches the point B. Calculate the normal force that acts on the ball at B, assuming that there is no friction between the ball and the surface of contact.

Two blocks A and B of masses m_(A) and m_(B) have velocity v and 2v respectively at a given instant A horizontal force F acts on the block A There is no friction between ground and block B and coefficient of friction between A and B is mu The friction

If acceleration of A is 2m//s^(2) which is smaller than acceleration of B then the value of frictional force applied by B on A is

A turn of radius 100 m is banked for a speed of 20 m/s (a) Find the banking angle (b) If a vehicle of mass 500 kg negotiates the curve find the force of friction on it if its speed is – (i) 30 m/s (ii) 10 m/s Assume that friction is sufficient to prevent skidding and slipping. [Take "tan" 22^(@) = 0.4 , "sin" 22^(@) = 0.375 , "cos" 22^(@) = 0.93 , g = 10 ms^(-2) ]

A plank of mass 10kg rests on a smooth horizontal surface. Two blocks A and B of masses m_(A)=2kg and m_(B)=1kg lies at a distance of 3m on the plank as shown in the distance of 3m on the plank as shown in the figure. The friction coefficient between the blocks and plank are mu_(A)=0.3 and mu_(B)=0.1 . Now a force F = 15 N is applied to the plank in horizontal direction. Find the time after which block A collides with B.

A block weighing 20 N rests on a horizontal surface. The: coefficient of static friction between block and surface is 0.40 and the coefficient of kinetic friction is 0.20. ( a) How large is the friction force exerted on the block? (b) How great will the friction force be if a horizontal force of 5 N is exerted on the block? (c) What is the minimum force that will start the block in motion? (d) What is the minimum force that will keep the block in motion once it has been started? (e) If the horizontal force is 10 N, what is the friction force?

In the arrangement shown in figure m_(A) = 4.0 kg and m_(B) = 1.0 kg. The system is released from rest and block B is found to have a speed 0.3 m/s after it has descended through a distance of 1m. Find the coefficient of friction between the block and the table. Neglect friction elsewhere. (Take g = 10 m/ s^(2) )

A constant force acting on a block of mass 5 kg changes (a) its speed from 6m//s to 10 m//s in travelling a distance 8m in a straight line, (b) its speed from 2m//s to 8m//s in 3s a straight line. Find the magnitude and the direction of the force.