Chapter - 1 Motion and Measurement of Distances

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Q
Motion and Measurement of Distances

Question:

Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?

Answer:

We would not like to use a measuring tape made of an elastic material because an elastic measuring tape is stretchable. It cannot be used to measure distance because the length of the tape may change on stretching. As a result of which the measured length would not be correct.

If we measure a certain distance twice using elastic tape, then we may get different values for the same length. 


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