Question

9.(a) What is the difference between static friction and sliding friction? For a given pair of object,

which of the two is greater?

(b)How can a very heavy machine be moved conveniently from one place to another in a factory.​

Answer 1

(a) static friction is the friction applied when someone walks and sliding friction is that when some object is sliding.

Static friction is greater from sliding friction.

(b)In case of moving of heavy machines rolling friction is used in which two bodies respectively roll on each other.

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