Answer to Question #226627 in Mechanical Engineering for Papi Chulo

Question #226627

A 350 mm diameter grinding wheel must be driven at a grinding speed (speed at circumference) if 1200 meters per minute. It takes 5 seconds to reach this speed from rest, runs at this speed for the next two minutes and then starts to decelerate uniformly, finally coming to rest after a further 30 seconds. Draw a neat angular velocity-time graph and determine how many revolutions the wheel made in total.


Also clearly show what the following values are:


ω1

θ1

θ2

θ3

θtotal

1
Expert's answer
2021-08-18T13:52:02-0400



For first part of the motion



for second part of the motion


for third part of the motion






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