Radius of gyration of a body about an axis is 12 cm. Radius of gyration of the same body about a parallel axis passing through its centre of gravity i
Radius of gyration of a body about an axis is 12 cm. Radius of gyration of the same body about a parallel axis passing through its centre of gravity is 13 cm. T?hen perpendicular distance between the two axes is
A. 5 cm
B. 1 cm
C. 15 cm
D. 10 cm
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Correct Answer - A
`K_(0)^(2)=K_(c )^(2)+h^(2)`
`therefore h^(2)= K_(0)^(2)-K_(c )^(2)`
`= 13^(2)-12^(2)=169-144`
`h^(2)=25`
`h=5 cm`.
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