Why rolling friction is smaller than sliding friction
Answers
Answered by
0
rolling friction is the resistance to motion experienced by a body when it rolls upon another. it is much less than sliding friction for same pair of bodies . when one body rolls upon another ,there is theoretically no sliding or slip between them. and if both a rigid perfectly ,there is no surface of contact.........
Merlin863:
hope it helps ..........
Wronv
Excuse me! May I know why its wrong??
Its wring
Answered by
1
As you know friction comes into existence when there is a contact made between two surfaces
Every surface has gazillions of small fibres that project out just like a broom
Whenever a body is kept over a surface due to weight of the body the fibres of the two surfaces are interlocked hindering any motion( this can understood by interlocking ones fingers of both hands ) so more the area in contact more is the interlocking and hence more is the friction.
Since a circle has minimum surface in contact (and as rolling occurs mostly in case of circular objects ),the frictional force is less hence the friction acting on a rolling body ( rolling friction) is less than sliding friction.
Every surface has gazillions of small fibres that project out just like a broom
Whenever a body is kept over a surface due to weight of the body the fibres of the two surfaces are interlocked hindering any motion( this can understood by interlocking ones fingers of both hands ) so more the area in contact more is the interlocking and hence more is the friction.
Since a circle has minimum surface in contact (and as rolling occurs mostly in case of circular objects ),the frictional force is less hence the friction acting on a rolling body ( rolling friction) is less than sliding friction.
Similar questions