Subject :NSO Class : Class 8
A plank is supported on the steps of a
staircase as shown in the figure. How
many forces are acting on the plank?
A Four
B Five
C Six
D Seven
if object not intending to move then why will friction act on it??????????
Ans 1:
Class : Class 9
I think friction is taken as one and normal force tooif we are in apparent contact with one surface then friction is onebut the actual contact is at many places so we can't say it as many frictional forces.