A 10 KgKg wheel that is 40 cmcm in diameter rotates through an angle of 19 radrad as it slows down uniformly from 16 rad/secrad/sec to 26 rad/secrad/sec . What is the magnitud of the angular acceleration of the wheel?

The magnitude of angular acceleration of the wheel = 0.26

Explanation:

Mass m = 10 kg

Diameter = 0.4 m

Initial speed

Final speed

Angle = 19 rad

The value of final speed is given by

Put all the values in above equation we get

16 = 26 + 2 () (19)

= - 0.26

Therefore the magnitude of angular acceleration of the wheel = 0.26

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b.a device that inputs heat into a cool object