JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank

done Graphical Questions Total Questions - 11

• 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 
  A)
  done clear
  B)
  done clear
  C)
              done clear
  D)
  done clear
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• 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]
  A)
                  0.2\[kg\,m{{\sec }^{-1}}\] done clear
  B)
                     \[-0.2kg\,m{{\sec }^{-1}}\] done clear
  C)
                     \[0.1kg\,m{{\sec }^{-1}}\] done clear
  D)
                                  \[-0.4kg\,m{{\sec }^{-1}}\] done clear
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• 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]
  A)
                                  ? 2 N-s                 done clear
  B)
                                     + 4 N-s                 done clear
  C)
                                  6 N-s                      done clear
  D)
                                  Zero                 done clear
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• 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
  A)
                                  AB                 done clear
  B)
                                  BC                 done clear
  C)
                                  CD                 done clear
  D)
                                  DE done clear
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• 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.
  A)
                                  \[9.25\,m{{s}^{-1}}\]                 done clear
  B)
                                  \[5\,m{{s}^{-1}}\]                 done clear
  C)
                                  \[14.25m{{s}^{1}}\]                 done clear
  D)
                                     \[4.25m{{s}^{1}}\] done clear
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• question_answer6)
  Which of the following graph depicts spring constant k versus length l of the spring correctly
  A)
                  done clear
  B)
  done clear
  C)
                                                done clear
  D)
  done clear
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• 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
  A)
                                  \[mu/T\]                 done clear
  B)
                                  \[2mu/T\]                 done clear
  C)
                                  \[mu/2T\]                 done clear
  D)
                                     None of these done clear
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• 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.
  A)
                                  \[u=\frac{\pi F_{0}^{2}}{2m}\]                 done clear
  B)
                                     \[u=\frac{\pi {{T}^{2}}}{8m}\]                 done clear
  C)
                                  \[u=\frac{\pi {{F}_{0}}T}{4m}\]                 done clear
  D)
                                     \[u=\frac{{{F}_{0}}T}{2m}\] done clear
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• 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
  A)
                                  Zero           done clear
  B)
                                  5 N-s                 done clear
  C)
                                  30 N-s                 done clear
  D)
                                  50 N-s                 done clear
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• 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
  A)
                                  P                             done clear
  B)
                                  Q                 done clear
  C)
                                  R                             done clear
  D)
                                  S done clear
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• 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                
  A)
                                  I and II                  done clear
  B)
                                  III and I                 done clear
  C)
                                  III and IV                              done clear
  D)
                                  IV only done clear
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