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4 May, 10:20

The blades in a blender rotate at a rate of 6800 rpm. When the motor is turned off during operation, the blades slow to rest in 2.8 s.

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  1. 4 May, 12:12
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    The angular acceleration of the blade when it's switched off is (-6800 rev/min) divided by (2.8 sec) = - 2,428.6 rev / (min-sec) = - 40.5 rev/sec^2.
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