Physics, 25.11.2019 21:31 djmccarter
Adisk shaped grindstone of mass 3.0 kg and radius 8 cm is spinning at 600 rpm. after the power is shut off the frictional torque brings the grindstone to rest in 10 s. what is the number of revolutions of the grindstone after the power is shut off?
Answers: 3
is the angular acceleration of the grindstone. Using the formula of rotational kinematics as :
is the number of revolutions of the grindstone after the power is shut off. Now using the third equation of rotational kinematics as :
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Adisk shaped grindstone of mass 3.0 kg and radius 8 cm is spinning at 600 rpm. after the power is sh...
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