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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A coin placed on a rotating table just slips if it is placed at a distance $4 r$ from the centre. If we double the angular velocity of the table, then the coin will just slip when it is away from the centre at a distance equal to

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Answer:

Solution:

$∴ ω = \sqrt{\frac{µ g}{r}} ∴ ω \propto \frac{1}{\sqrt{r}} \Rightarrow r \propto \frac{1}{ω^{2}}$

Since $ω$ is double thus,

$r' = \frac{4 r}{4} = r$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Circular MotionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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