Static friction is self adjusting force

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Limiting friction is self adjusting force

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answer is A.

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Detailed Solution

Static friction wants the objects to stay at rest and not move, it is termed a self-adjusting force. Because of this, if an external force is applied, the static friction force will match it until it exceeds the threshold of motion.Because static friction wants the objects to stay at rest and not move, it is termed a self-adjusting force. Because of this, if an external force is applied, the static friction force will match it until it exceeds the threshold of motion.

*static friction is self adjusting force $f_{s} = F;$ Limiting friction is the maximum friction beyond which a body starts moving.

*Limiting friction is not self adjusting force

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