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Units And Measurement

Question

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Does a homogenous disc has any moment of mass about the centre of the disc?

Solution

The moment of the mass of a body about the centre of mass is zero. So, at the centre of the homogeneous disc, the moment of mass of the disc is zero. And, the centre of mass of the homogeneous disc lies at the centre of the disc.

Some More Questions From Units and Measurement Chapter

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?

How many fundamental quantities are there in mechanics?

How many fundamental quantities are there in Physics?

Name the fundamental quantities of mechanics.

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