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Question

Identify the type of friction acting in the following figure:

A
Static friction
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B
Sliding friction
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C
Rolling friction
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D
Fluid friction
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Solution

The correct option is B Sliding friction
Sliding friction is the kind of friction that acts when two objects slide against each other. Hence, sliding friction acts between chalk and blackboard. It helps us write on blackboard with a chalk. Other examples of sliding friction are skiing, sledging, kid sliding down a slide etc.

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