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What is the value of the radius of gyration of disc type flywheel...

Q.  
What is the value of the radius of gyration of disc type flywheel as compared to rim type flywheel for the same diameter?


Answer & Explanation

M.I. of disc type flywheel: mk² = 1/2 (mr²)
therefore, k= 1/√2*r² ---(1)
M.I. of rim type flywheel: mk²= (mr²)
therefore, k= r² ---(2)
From equation 1 and 2 we can say,
MI of disc Flywheel = 1/√2 *(MI of Rim type Flywheel)

Thus correct option is: B.

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