A 2 m long shaft rotates about one end at 20 rad/s. It begins to accelerate with ? = 10 rads/s<sup>2</sup>. After how long, in seconds, will the velocity of the free end reach 100 m/s?

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Q. A 2 m long shaft rotates about one end at 20 rad/s. It begins to accelerate with ? = 10 rads/s². After how long, in seconds, will the velocity of the free end reach 100 m/s?

(A) 3

(B) 5

(D) 7

Correct : Option (A)

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Q. A 2 m long shaft rotates about one end at 20 rad/s. It begins to accelerate with ? = 10 rads/s2. After how long, in seconds, will the velocity of the free end reach 100 m/s?

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Q. A 2 m long shaft rotates about one end at 20 rad/s. It begins to accelerate with ? = 10 rads/s². After how long, in seconds, will the velocity of the free end reach 100 m/s?