When the frictional force acting on a block at rest is plotted against the gradually…

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

When the frictional force

f

acting on a block at rest is plotted against the gradually increased horizontal pull

F

, the value of

f

at the point where the block just begins to slide is (a)

\mu_k N

(b)

N

(c)

\mu_s N

(d)

\dfrac{\mu_s N}{2}