The blades in a blender rotate at a rate of 6500 rpmrpm . When the motor...

Question

Question

The blades in a blender rotate at a rate of 6500 rpmrpm . When the motor is turned off during operation, the blades slow to rest in 3.3 s

What is the angular acceleration as the blades slow down?

Answer 1

Answer #1

1 rpm = 2 radians/minute

Initial Angular Velocity = 6500 rpm = 6500 x 2 radians/minute x 1minute/60seconds = 216.66 radians/s

Final Angular Velocity = 0

Time taken = 3.3s

Angular acceleration = (Final Angular Velocity - Initial Angular Velocity)/Time taken = (0 - 216.66 )/3.3

= - 65.65 radians/s²

Negative sign indicates decelartion

We were unable to transcribe this image

Answer 2

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