CBSE Class 11-science Answered
why do tyres have a better grip of the road while going on a level road than while going on an incli
Asked by | 18 Aug, 2008, 06:30: PM
Expert Answer
On an inclined plane (or hill),
normal reaction from the plane = the component of weight(mg)of vehicle perpendicular to the plane (which is mg cosθ where θ is angle of inclination) only
whereas on a level ground,
normal reaction = the entire weight(mg) of the vehicle.
Friction is directly proportional to the normal reaction, so tyres experience more friction on level ground and hence hold a better grip than on the inclined plane.
Answered by | 20 Oct, 2008, 02:36: AM
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