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haridas_mandal
 3 years ago
Consider the two statements :
Statement A : Frictional Force can be zero even though the contact surface is rough.
Statement B : Even though there is no relative motion between surfaces, friction force force may exists between them.
Options a) Both A & B are true b) A is true B is false.
c) A is false but B is true. d) Both A & B are false.
Which and why is the right answer?
haridas_mandal
 3 years ago
Consider the two statements : Statement A : Frictional Force can be zero even though the contact surface is rough. Statement B : Even though there is no relative motion between surfaces, friction force force may exists between them. Options a) Both A & B are true b) A is true B is false. c) A is false but B is true. d) Both A & B are false. Which and why is the right answer?

This Question is Closed

haridas_mandal
 3 years ago
Best ResponseYou've already chosen the best response.0Pl explain as my daughter has answered option c as correct and she needs to know why she is not correct?

VincentLyon.Fr
 3 years ago
Best ResponseYou've already chosen the best response.0If the contact surface is horizontal, and the object on it is at rest, without any sideways force pushing on it, then frictional force will be zero.

VincentLyon.Fr
 3 years ago
Best ResponseYou've already chosen the best response.0The only contact force will be the normal force opposing weight of the object.
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