Introduction to Mechanics
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Introduction to Mechanics
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25 Questions

1. Two bodies have same kinetic energy. They are stopped by applying same retarding force. Which body will stop first?
2. Two electrons are brought closer together. The potential eergy of the system will be
3. What determines the nature of the path followed by the particle?
4. A body of mass m moving with a constant velocity v hits another body of the same mass at rest and sticks to it. The velocity o the compound body after collision is
5. The angular momentum of particle is
6. Which of the following is a vector?
7. Which of the following can be zero when the particle is in motion for some time?
8. Two forces of 4 dyne and 3 dyne act upon a body. The resultant force on the body can only be
9. A block of mass 0.5 kg. rests against a wall exerting a horizontal force of 15N on the wall. If the coefficient of friction between the wall and the block is 0.5 then the frictional force acting on the block will be
10. The time taken by the radio waves in coming from communication satellite to earth and back is
11. The angular momentum and the moment of the inertia are, respectively
12. A body crosses the top most point of a vertical circle with a critical speed. What will be the acceleration when the string is horizontal?
13. The gravitational effect of which of the following causes tidal waves in the sea?
14. Give the dimensional formula of mutual inductance.
15. When the velocity of a body is doubled
16. The value of G depends upon
17. A science student takes 100 observations in an experiment. Second time he takes 500 observations in the same experiment. By doing so the possible error becomes
18. A heavy and lighter body are dropped from the top of a tower. Which will reach the ground first?
19. In an experiment to determine acceleration due to gravity by simple pendulum, a student commits 1% positive error in the measurement of length and 3% negative error in the time then % error in g will be
20. A stone of mass 2 kg released with zero velocity from the top of a tower reaches the ground in 4 s. It hits the ground with a force ... if it comes to rest instantaneously.
21. A body of mass 20 kg is at rest. A force of 5 Newton is applied on it. The work done in first second will be
22. A stone tied to one end of the string is revolved round a rod in such a way that the string winds over the rod and gets shortened. In this process, which of the following quantities remains constant?
23. The work done in dragging a block of mass 5 kg on an inclined plane of height 2 m is 150 Joule. The work done against the frictional force will be
24. A force of 6 kg and 8 kg can be applied together to produce the effect of a single force of
25. I walked 4 mile turned to my left and walked 6 mile then turned to my right again and walked 4 mile. Which of the choice mentions the distance from the straight point to the place where I stopped?

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