A fan blade,initially at rest,rotates with a constant acceleration of 0.025 rad/s².What is the time interval required for it to reach a 10-rad displacement after starting from rest? A) 28 s B) 2.0 s C) 56 s D) 18 s

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Quizplus · Accepted Answer

Explanation:Using the equation of motion,$$	heta_f=	heta_i+\omega_it+\frac{1}{2}\alpha t^2$$$$10=0+0+\frac{1}{2}	imes0.025	imes t^2$$$$t^2=800$$$$t=28.28\approx28	ext{ s}$$

A Fan Blade,initially at Rest,rotates with a Constant Acceleration of 0.025