NEET-XII-Physics
10: Rotational Mechanics
- #22The angular velocity of the engine (and hence of the wheel) of a scooter is proportional to the petrol input per second. The scooter is moving on a frictionless road with uniform velocity. If the petrol input is increased by 10%, the linear velocity of the scooter is increased by
(a) 50%
(b) 10%
(c) 20%
(d) 0%.digAnsr: dAns : (d) 0%.
On a frictionless road, we have:
Angular velocity of the engine = 0
Therefore, increase in petrol input will not affect the angular velocity and hence the linear velocity of the scooter will remain the same.
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