1975Civil EngineeringMedium
Pick up wrong statement about friction force for dry surfaces. Friction force is________?
Anone of the above is wrong statement
Bproportional to velocity of sliding
Cindependent of the area of contact surfaces
Ddependent on the materials of contact surface
Eproportional to normal load between the surfaces
Correct answer
B. proportional to velocity of sliding
Explanation
The correct answer is proportional to velocity of sliding.