Evaluate the angular velocity of the rod


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Q: A 3-kg slender rod rotates in a vertical plane about a pivot at B. A spring of constant k = 300 N/m and of un-stretched length 120 mm is attached to the rod as shown. Knowing that in the position shown the rod has an angular velocity of 4 rad/s clock wise, determine the angular velocity of the rod after it has rotated through

(a) 90°,

(b)180°.

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Mechanical Engineering: Evaluate the angular velocity of the rod
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