Question

A box with a weight of 100 N rests on a horizontal floor. The coefficient of static friction is = 0,40 and the coefficient of kinetic friction = 0,30. Determine the frictional force acting on the box if a horizontal force is applied with a magnitude of: a) O N; b) 20 N; C) 40 N; d) 60 N​

Answer 1

Weight=100N
SF=0.4
KF=0.3
Magnitude?
0.4 x 0.3 = 0.12
0.12x100=12
Ans =20