| 1 |
Which one of the following force cannot do any work on the particle on which it acts. |
- A. Fractional force
- B. Gravitational force
- C. Electrostatic force
- D. Centripetal force
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| 2 |
An elevator is moving up with an acceleration equal to 'g' An apparent weight of the body in an elevator is. |
- A. Zero
- B. Equal to real weight
- C. 2 mg
- D. 3 mg
|
| 3 |
When a body is moving along a circular path, then such a motion is called |
- A. Vibratory motion
- B. Rotatory motion
- C. Linear motion
- D. None of these
|
| 4 |
The dimensions of angular velocity are |
- A. [LT-1]
- B. [LT-2]
- C. [T-1]
- D. [L-1T-1]
|
| 5 |
When a particle is moving along a circular path its projection along the diameter executes |
- A. Linear motion
- B. Vibratory motion
- C. Rotatory motion
- D. SHM
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| 6 |
As we go from pole to equator of earth, the value of 'g' |
- A. Increase
- B. Decrease
- C. Remain constant
- D. Zero
|
| 7 |
A body rotating with angular velocity of 2 radian/s and linear velocity is also 2 ms-1, then radius of circle is. |
- A. 1 m
- B. 0.5 m
- C. 4 m
- D. 2 m
|
| 8 |
The amount of inertia of 10 kg hoop about the axis of rotation perpendicular to its plane having radius 5 m is |
- A. 50 kgm2
- B. 100 K gm2
- C. 150 K gm2
- D. 250 K gm2
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| 9 |
Close orbiting satellites orbit the earth at a height of about |
- A. 400 km
- B. 4000 km
- C. 400 m
- D. 400 cm
|
| 10 |
The work done by centripetal force is |
- A. (-)ve
- B. (+)ve
- C. Maximum
- D. Zero
|