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  1. Block B of mas 2 kg is placed on smooth horizontal plane. Block A of mass 1 kg is placed on block B.The coefficient of friction between A and B is 0.40.The A is imparted a velocity 16 m/s at t = 0 Find the time at which momentum of the blocks are equal (in second) $$ (g = 10 m/s^2) $$ View Solution Q 2

  2. Block A is placed on a rough wedge B which is placed on a smooth surface. The wedge has angle of inclination of 30o and is imparted a horizontal acceleration g towards right. Block A is given an initial velocity v0 along w.r.t. incline. Find the coefficient of friction for which block A moves with constant velocity v0 with respect to wedge (g = 10m/s2).

  3. If block A starts from rest at t = 0 & begins to move towards right with an acceleration of 2 m/s2 & simultaneously bolck C moves towards right with constant velocity of 4 m/s.

  4. Block A of mass 2kg is placed over a block B of mass 8kg. The combination is placed on a rough horizontal surface. If g = 10 ms−2, coefficient of friction between B and floor = 0.5, coefficient of friction between A and B = 0.4 and a horizontal force of 10 N is applied on 8kg block, then the force of friction between A and B is

  5. Block B has mass m and is released from rest when it is on top of wedge A, which has a mass 3m. Determine the tension in cord CD needed to hold the wedge from moving while B is sliding down A. Neglect friction. View Solution

  6. Block B in Fig. weighs 711 N.The coefficient of static friction between the block and the table is 0.25; angle θ is 30 ∘; assume that the cord between B and The knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

  7. A small block B is placed on another block A of mass 5 kg and length 20 cm. Initially the block B is near the right end of block A Figure. A constant horizontal force of 10 N is applied to the block A. All the surfaces are assumed frictionless. Find the time elapsed before the block B separates from A.

  8. Question Block A and B are resting on a smooth horizontal surface given equal speeds of 2m/s in opposite sense as shown in the figure. At t = 0, the position of block are shown, then the coordinates of center of mass at t =3s will be :

  9. B =3 2. View Solution. Find out acceleration of the block. Initially the block is at rest.

  10. 67.Block B’ moves without rotation vertically downwards with constant velocity of 1m/s then what is the relative velocity of C with respect to A : View Solution