Civil Engineering - UPSC Civil Service Exam Questions - Discussion

2. 

The kinetic energy in Nm of a circular disc of 20 m diameter and 10 cm thick, of material weighing 100 kg/m3, rotating above an axis through its centre at right angles to its place and making 2000 rpm is

[A].
[B].
[C]. 2 x 108 π3
[D]. 4 x 108 π3

Answer: Option B

Explanation:

No answer description available for this question.

Umesh Jit said: (Sep 17, 2018)  
KE = 0.5 m V^2.
V= angular velocity.
V= 2π N/60.

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