Civil Engineering MCQAE Level Civil Engineering
Which of the following about impending motion on a rough plane is correct?
Engineering MechanicsFrictionMEDIUM
Choose the correct answer
A
friction is independent of normal reaction
B
coefficient of friction has units of kN
C
friction always acts in direction of impending motion
D
limiting friction equals coefficient of friction times normal reaction
Correct Answer
D. limiting friction equals coefficient of friction times normal reaction
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Dry friction follows F_lim = mu N. Correct option: D.
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