Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

An electric fan has blades of length $30 cm$ as measured from the axis of rotation. If the fan is rotating at $1200 rpm$ , the acceleration of a point on the tip of the blade is about

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Answer:

Solution:

$G i v e n, f = 1200 r p m,$

$r = 30 c m = \frac{30}{100} m$

Acceleration of a point at the tip of the blade

= centripetal acceleration

$= ω^{2} r = {(2 π f)}^{2} r$

$= {(2 \times \frac{22}{7} \times \frac{1200}{60})}^{2} \times \frac{30}{100}$

$= 4740 m s^{- 2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Circular MotionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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