Which of the following examples shows that friction is a foe?

Braking of vehicles

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Heating of machine parts

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Walking

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Writing

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Solution

The correct option is B Heating of machine parts

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Similar questions

Give examples to show that friction is both a friend and a foe.

(a) Given examples to show that firction depends on the nature of two surfaces in contact.
(b) Give an example to show that friction depends on the force with which the two surfaces are pressed together.

Q. Which of the following examples show that friction is a foe?

Q. Give examples to show that friction is a friend or a foe.

Q. Give examples to show that friction is both a friend and a foe.
[4 marks]

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