NEET Physics: Questions 892 - 897 of 2099
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Read the passage given below and answer the questions that follows: A block of mass 1 kg is placed on a rough horizontal surface. A spring is attached to the block whose other end is joined to a rigid wall, as shown in the figure. A horizontal force is applied on the block so that it remains at rest while the spring is elongated by x.
Let F max and F min be the maximum and minimum values of force F for which the block remains a equilibrium. For a particular x,
F max - F min = 2N
Also shown is the variation of F max + F min versus x, the elongation of the spring.
Question number: 892 (3 of 3 Based on Passage) Show Passage
Question number: 893
A block is placed on a rough floor and a horizontal force F is applied on it. The force of friction f by the floor on the block is measured for different values of F and a graph is plotted between them –
(1) The graph is a straight line of slope 45°
(2) The graph is straight line parallel to the F axis
(3) The graph is a straight line of slope 45° for small F and a straight line parallel to the F-axis for large F.
(4) There is small kink on the graph
Which of the following options are correct?
1 and 4
1 and 2
3 and 4
1 and 3
Question number: 894
A particle of mass 4 m which is at rest explodes into three fragments two of the fragments each of mass m are found to move each with a speed v making an angle 90° with each other. The total energy released in this explosion is –
Read the passage given below and answer the questions that follows:
A bead of mass m is attached to one end of a spring of natural length R and spring constant The other end of the spring is fixed at point A on a smooth ring of radius R as shown in figure. When bead is released to move then