Which of the following statements about the concept of solid friction is NOT tru...
QuestionWhich of the following statements about the concept of solid friction is NOT true?
A) It always acts in the direction of motion
B) It causes wear and tear in car tyres
C) It depends on the nature of the surfaces in contact
D) It is independent of the area of the surfaces in contact.
E) It reduces the efficiency of the machine
The correct answer is A.
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