A disc of moment of inertia I1 is rotating freely with angular speed w1, when another disc (non rotating) with moment of inertia I2 is dropped on it. The 2 discs then rotate as 1 unit. Find the angular speed. State the law which u use.
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Answered by
18
Initial angular momentum = Final angular momentum
I1w1 + 0 = (I1 + I2)w
w = I1w1 / (I1 + I2)
Their combine angular velocity is I1w1 / (I1 + I2)
Law used is “Law of conservation of angular momentum”.
I1w1 + 0 = (I1 + I2)w
w = I1w1 / (I1 + I2)
Their combine angular velocity is I1w1 / (I1 + I2)
Law used is “Law of conservation of angular momentum”.
Answered by
1
Answer:
Angular momentum conservation
I1w1/I2+I1
Explanation:
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