explain why the force of rolling friction is less than that of sliding friction?

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Solution

Dear student
it is because in case of rolling the contact surface area of the object with the surface is very small so less bonds are formed and so less force of friction acts as compared to sliding friction where large area is in contact .
Regards

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Since rolling friction is less than sliding friction, sliding friction is replaced with rolling friction in most machines using ball bearings.

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

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

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explain why the force of rolling friction is less than that of sliding friction?

Dear student it is because in case of rolling the contact surface area of the object with the surface is very small so less bonds are formed and so less force of friction acts as compared to sliding friction where large area is in contact . Regards

Dear student
it is because in case of rolling the contact surface area of the object with the surface is very small so less bonds are formed and so less force of friction acts as compared to sliding friction where large area is in contact .
Regards