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Get Answers to all your Questions
Which one of the following statements is incorrect ?
- Option 1)
Frictional force opposes the relative motion.
- Option 2)
Limiting value of static friction is directly proportional to normal reaction.
- Option 3)
Rolling friction is smaller than sliding friction.
- Option 4)
Coefficient of sliding friction has
dimensions of length.
Answers (1)
As we have learned
Kinetic or Dynamic Friction -
kinetic friction
coefficient of kinetic friction
R = reaction
- wherein
depends on the nature of surface in contact.
Coefficient of sliding friction is dimension lessThis is incorrect
Option 1)
Frictional force opposes the relative motion.
This is incorrect
Option 2)
Limiting value of static friction is directly proportional to normal reaction.
This is incorrect
Option 3)
Rolling friction is smaller than sliding friction.
This is incorrect
Option 4)
Coefficient of sliding friction has
dimensions of length.
This is correct
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