Engineering Mechanics - PKRB: Impulse and Momentum - Discussion

Discussion :: PKRB: Impulse and Momentum - General Questions (Q.No.5)

5. 

The 12-kg disk has an angular velocity of = 20 rad/s. If the brake ABC is applied such that the magnitude of force P varies with time as shown, determine the time needed to stop the disk. The coefficient of friction at B is = 0.4.

[A]. t = 13.00 s
[B]. t = 7.00 s
[C]. t = 8.92 s
[D]. t = 5.08 s

Answer: Option D

Explanation:

No answer description available for this question.

Kalidass said: (Jul 31, 2016)  
I want derivation part of the anwser.

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