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Frictional Force

Sanjana perfo...

Question

Sanjana performed an experiment to find the amount of force needed to move a 100 g weight over different surfaces. Which of the following scales would show the smallest reading?

A

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B

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C

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D

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Solution

The correct option is D

Lesser friction is produced when smooth surfaces move against each other whereas greater friction is produced when rough surfaces move against again each other. Hence, reading on the scale with glass would be smallest.

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