Multiple choice

In which of the following cases is more friction needed?

  1. Spilling soapy water on a smooth granite floor in the kitchen

  2. Creaking hinge of a door

  3. Between machine parts with less grease

  4. Carroms being struck on a carrom board

  5. An aeroplane taking off
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

More friction is needed in an area where there is spilling of soapy water to prevent a person from falling.

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