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A grinding wheel is rotating at 3000 rpm. When the switch is turned off the wheel stops in 10 seconds. The uniform deceleration of the wheel was

[A].	1 rad/s2	[B].	4 rad/s2
[C].	10.4 rad/s2	[D].	31.4 rad/s2
[E].	62.8 rad/s2

Answer: Option D

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