A flywheel having constant angular acceleration requires 4.80s to rotate through

Question

A flywheel having constant angular acceleration requires 4.80s to rotate through 170rad. Its angular velocity at the end of this time is 108rad/s. Find the angular velocity at the beginning of the 4.80s interval; the angular acceleration of the flywheel.

=
rad/s
A flywheel having constant angular acceleration requires 4.80s to rotate through 170rad. Its angular velocity at the end of this time is 108rad/s. Find the angular velocity at the beginning of the 4.80s interval; the angular acceleration of the flywheel. Part A /omega0= rad/s Part B /alpha= rad/s^2

Explanation / Answer

Part A)

Apply = (f + o)t/2

170 = (108 + o)(4.8)/2

o = -37.2 rad/s

Part B)

Apply f = o + t

108 = -37.2 + ()(4.8)

= 30.3 rad/s2

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