Grade 11Mechanics
What would be the effect on the retarding force applied by the brakes if the length of the brakes is increased?
What would be the effect on the retarding force applied by the brakes if the length of the brakes is increased?
3 Answers
iit jee
Approved Tutor Answer15 Years agohi,
there would be no effect on retarding force which is nothing but a frictional force, as friction depends only on nature of material
not the area of contact........
Neer Varshney
Approved Tutor Answer15 Years agoSee the force applied does not depend upon the length of the brakes, It depends only upon mass and acceleration of the vehicle.
Ritvik Gautam
Approved Tutor Answer15 Years agoBreaks work on the principle of friction. When we apply the breaks, it opposes the rotational motion of the wheel.
We know that,
Frictional Force = Coefficient of friction x Normal Reaction
Since, neither coefficient of friction or normal reaction, depend on the area of contact, hence there will be no effect if the length of the breaks are increased or decreased.
Please Approve!!
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