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An electric fan has blades of length 30 cm measured from the axis of rotation. If the fan is rotating at 120 rpm, the acceleration of a point on the tip of the blade is
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- 1600 ms–2
- 47.4 ms–2
- 23.7 ms–2
- 50.55 ms–2
Correct Option: C
Centripetal acc. = ω2r = 4π2v2r
| = 4 × (3.14)2 × | × | = 23.7 ms-2 | ||
| 60 | 100 |
[ ∵ ω = 2πv ]
