Why is sliding friction less than static friction? [3 MARKS]

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Solution

Proper Reasoning : 3 Marks

When an object starts sliding, the contact points on its surface, do not get enough time to lock into the contact points on the floor. But when they are at rest the interlocking andd the boding between the surfaces are stronger. So, the sliding friction is slightly smaller than the static friction.

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Q. Explain why the sliding friction is less than the static friction.

Which of the following statements is incorrect?
(a) static friction is greater than rolling friction
(b) sliding friction is less than rolling friction
(c) rolling friction is less than static friction
(d) static friction is greater than sliding friction

Arrange the magnitudes of the following in ascending order : Rolling friction, Sliding friction, Static friction.
Also explain why is that? [3 MARKS]

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