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Applications of Friction

Which of the ...

Question

Which of the following are examples of using streamlined shapes to reduce friction?

A

A, B and C only

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B

A, C and D only

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C

B, C and D only

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D

A, B, C and D

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Solution

The correct option is B A, C and D only
Aircrafts, rockets and bullet trains travel at very high speeds. As a result of this, they experience enormous drag force. To reduce this, they are streamlined. Lorries travel at much slower speed and hence streamlining is not that important.

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