The angle of friction is: – McqOptions

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1.	The angle of friction is:
A.	The ratio of the friction and the normal reaction
B.	The force of friction when the body is in motion
C.	The angle between the normal reaction and the resultant of normal reaction and limiting friction
D.	The force of friction at which the body is just about to move
Answer» D. The force of friction at which the body is just about to move

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