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Units and Measurement
Question
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What happens to the potential energy when a body rolls down an inclined plane? 

Answer

While rolling, the body has both translational as well as rotational motion. Therefore, the potential energy of the body is converted into translational and rotational kinetic energy. 

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Some More Questions From Units and Measurement Chapter

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?

How many fundamental quantities are there in mechanics?