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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A table fan, rotating at a speed of $2400 r p m$ is switched off and the resulting variation of the rpm with time is shown in the figure. The total number of revolutions of the fan before it comes to rest is

Options:

Answer:

Solution:

Number of revolutions = area under the curve

no. of revolution $= \frac{1}{2} \times (\frac{2400}{60} + \frac{600}{60}) \times 8 + \frac{1}{2} \times \frac{600}{60} \times 16$

no. of revolution $= 280$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Circular MotionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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