Home › CBSE Class 11 (Science) › Physics › Laws of Motion › For equal weight, how does rolling friction comp…
For equal weight, how does rolling friction compare with sliding?
AMuch smaller than sliding
BAbout equal to sliding
CSlightly larger than sliding
DExactly double sliding
Answer & Solution
Correct answer: A. Much smaller than sliding
A rolling body deforms its contact surface very little, so the resisting force is 2 or 3 orders of magnitude below static or sliding friction.
Related questions
A book rests on a desk. Why are weight and normal force not an action-reaction pair?Two blocks of 2 kg and 3 kg touch on a smooth desk. A 10 N push gives acceleration?A block slides down a smooth 30 degree incline. Its acceleration? (g = 10 m/s²)The same lift accelerates down at 2 m/s². Normal force on the 60 kg person? (g = 10)A lift carrying a 60 kg person accelerates up at 2 m/s². Normal force? (g = 10)The maximum safe speed of a car on a level curve is independent of?A car on a level road has µs = 0.5 and turn radius 20 m. Maximum speed? (g = 10)What supplies centripetal force for a car turning on a level road?