Fig. shows two blocks A and B having masses 1 kg and 2 kg respectively. A force of 5 N is applied on A. Coefficient of friction between A and B is 0.2 and that of between B and horizontal surface is zero. Find the time taken for the front face of A of coincide with that of B ?

Two bodies A and B of masses 5 kg and 10 kg in contact with each other rest on a table against a rigid wall (Fig. 5.21). The coefficient of friction between the bodies and the table is 0.15. A force of 200 N is applied horizontally to A. What are :- the reaction of the partition.

Two bodies of masses 10 kg and 20 kg respectively kept on a smooth, horizontal surface are tied to the ends of a light string, a horizontal force F = 600 N is applied to:- A what is the tension in the string?

Three blocks A,B and C weighing 1 kg, 8 kg, and 27 kg respectively are connected a shown in the figure with inextensible string and are moving on smooth surface.If F=36 N,then T is : .

Two bodies of masses 10 kg and 20 kg respectively kept on a smooth, horizontal surface are tied to the ends of a light string, a horizontal force F = 600 N is applied to:-B along the direction of string. What is the tension in the string in each case?

A block is pushed by a force F = 10 N. A frictional force of 2 N acts between the block and the surface. Find the work done by the friction when the block moves 10 m.

Two bodies of masses 10kg and 20 kg respecively kept on a smooth, horizontal surface are tied to the ends of a lght string. A horizontal force F= 600 N is applied to (i) A (ii) B along the direction of string. What is the tension in the string in each case?

A block of mass 15 kg is placed on a long trolley. The coefficient of friction between the block and the trolley is 0.18. The trolley accelerate from rest with 0.5 ms^-2 for 20 s and then moves with unifrom velocity. Discuss the motion of the block as viewd by an observer with the trolley.

Figure 5.18 shows a man standing stationary with respect to a horizontal conveyor belt that is accelerating with 1 m s^-2 . What is the net force on the man? If the coefficient of static friction between the man’s shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt ? (Mass of the man = 65 kg.)

If A and B are two matrices of the order 3xx m and 3 xx n respectively and m = n, then the order of the matrix 2 A - 5 B is