NEET Physics: Questions 810 - 814 of 2098
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Question number: 810
Read the passage given below and answer the questions that follow:
A system consists of block A and B each of mass m connected by a light spring as shown in the figure with block B in contact with a wall. The block A compresses the spring by 3mg /k from natural length of spring and then released from rest. Neglect friction anywhere.
Question number: 811 (3 of 3 Based on Passage) Show Passage
Question number: 812
Question number: 813
The contact force exerted by a body A on another body B is equal to the normal force between the bodies. We conclude that -
(1) The surfaces must be smooth
(2) Force of friction between two bodies may be equal to zero
(3) Magnitude of normal reaction is equal to that of friction
(4) Bodies may be rough
Which of the following options are correct?
1 and 4
2 and 4
1 and 2
3 and 4