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Units And Measurement

Question

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What is the ratio of radius of gyration of solid sphere about diameter to its radius?

Solution

Relation between moment of inertia and radius of gyration, I = MK²
And, for a solid sphere, moment of inertia about the diameter = $2 over 5 space MR squared$
Therefore,
Radius of gyration of a solid sphere about the diameter to it's radius = $square root of 2 divided by 5 end root$ R

Some More Questions From Units and Measurement Chapter

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?

Is one unit sufficient to measure a physical quantity?

Can a physical quantity have two or more units? Give example.

What are fundamental quantities?

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