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A wheel which initiallty at rest starts ...

A wheel which initiallty at rest starts rotating at time `t = 0`. The angular acceleration `prop` decrease from `50 rad//s^2` to zero value `5` seconds. During this interval, `prop` varies according to the.
`prop = prop_0(1 - (t)/(5))`
The angular velocity of the wheel at `t = 5 s` will be.

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