The angular frequency of a fan increases from 30rpm to 60rpm in pi seconds. A dust particle is present on the blades at distance 20 cm from axis of rotation. Find the net acceleration of dust particle at the end of 5 seconds
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Explanation:
the fan takes pi seconds to accelerate from 30 to 60rpm.
after pi seconds are over the particle stops accelerating and moves with constant speed.
thus the net acceleration of the particle is zero
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