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Units And Measurement

Question

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What is rigid body?

Solution

A body is said to be rigid if the relative position of constituent particles do not change on applying any external force on it. Rigid body has a definite size and shape. The size and shape do not change during the motion of the body.

Some More Questions From Units and Measurement Chapter

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?

How many fundamental quantities are there in mechanics?

How many fundamental quantities are there in Physics?

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