An object of mass 80 kg is pulled on a horizontal rough ground by a force of 500 N. Find the coefficient of static friction.
[g = 10 ms-2]
[g = 10 ms-2]
-
A.
0.8 -
B.
0.4 -
C.
1.0 -
D.
0.6
Correct Answer: Option D
Explanation
coefficient of friction = (F)/R = (F)/ mg = (500)/80 x 10
= 0.625