Circular MotionHardBloom L3
Question
The graphs below show angular velocity as a function of time. In which one is the magnitude of the angular acceleration constantly decreasing?
Options
A.
B.
C.
D.
Solution
Sol. (A) 
angular acceleration (α) = $\frac{d\omega}{dt}$
when it goes decreasing means at a point where $\frac{d\omega}{dt} = 0$.
ω = ω0 + αt So this graph is possible.
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