MCQ
When a ceiling fan is switched on, it makes $10$ rotations in first $3\,seconds,$ How many rotations will it make in the next $3\,seconds.$ (Assume uniform angular acceleration)
- A$10$
- B$20$
- ✓$30$
- D$40$
✓
Answer
Correct option: C.
$30$
c
For constant acceleration
For constant acceleration
$n_1 : n_2 : n_3 ..... = 1 : 3 : 5 : \,...........$
$\therefore $ if $n_1 = 10$ rotation then $n_2 = 30$ rotation
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