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Units and Measurement
Question
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Which quantity, in rotational motion, plays the same role as mass in linear motion?

Answer

Moment of inertia (I) plays the same role in rotational motion as mass (m) plays in linear motion.

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Some More Questions From Units and Measurement Chapter

Define physical quantity.

 

Give four examples of physical quantities.

Define unit.

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?