A wheel rotating with a constant angular ac- celeration turns through 21 revolutions during a 6 s time inter
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A wheel rotating with a constant angular ac- celeration turns through 21 revolutions during a 6 s time inter

[From: ] [author: ] [Date: 13-11-05] [Hit: ]
ity is not zero. Answer in units of rad/s2. it seems easy enough but my answers are way off what am I doing wrong?Solving simultaneously,α = -1.wi = 26.......
A wheel rotating with a constant angular ac-
celeration turns through 21 revolutions during
a 6 s time interval. Its angular velocity at the
end of this interval is 17 rad/s.
What is the angular acceleration of the
wheel? Note that the initial angular veloc-
ity is not zero. Answer in units of rad/s2. it seems easy enough but my answers are way off what am I doing wrong?

-
17 = wi + α*6
21*(2π) = wi*6 + ½α*6²

Solving simultaneously,
α = -1.6637 rad/sec²
wi = 26.9822 rad/sec
1
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