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question_answer1) A block B is placed on block A. The mass of block B is less than the mass of block A. Friction exists between the blocks, whereas the ground on which the block A is placed is taken to be smooth. A horizontal force F, increasing linearly with time begins to act on B. The acceleration \[{{a}_{A}}\]and \[{{a}_{B}}\] of blocks A and B respectively are plotted against t. The correctly plotted graph is
question_answer2) In the figure given below, the position-time graph of a particle of mass 0.1 Kg is shown. The impulse at \[t=2\sec \] is [AIIMS 2005]
question_answer3) The force-time (F ? t) curve of a particle executing linear motion is as shown in the figure. The momentum acquired by the particle in time interval from zero to 8 second will be [CPMT 1989]
question_answer4) Figure shows the displacement of a particle going along the X-axis as a function of time. The force acting on the particle is zero in the region
question_answer5) A body of 2 kg has an initial speed 5ms?1. A force acts on it for some time in the direction of motion. The force time graph is shown in figure. The final speed of the body.
question_answer6) Which of the following graph depicts spring constant k versus length l of the spring correctly
question_answer7) A particle of mass m moving with velocity u makes an elastic one dimensional collision with a stationary particle of mass m. They are in contact for a very short time T. Their force of interaction increases from zero to F0 linearly in time T/2, and decreases linearly to zero in further time T/2. The magnitude of F0 is
question_answer8) A particle of mass m, initially at rest, is acted upon by a variable force F for a brief interval of time T. It begins to move with a velocity u after the force stops acting. F is shown in the graph as a function of time. The curve is a semicircle.
question_answer9) A body of mass 3kg is acted on by a force which varies as shown in the graph below. The momentum acquired is given by
question_answer10) The variation of momentum with time of one of the body in a two body collision is shown in fig. The instantaneous force is maximum corresponding to point
question_answer11) Figures I, II, III and IV depict variation of force with time (I) (II) (III) (IV) The impulse is highest in the case of situations depicted. Figure
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