A crate is pushed by a force making an angle of below the horizontal on a rough floor

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

Problem

10\,\text{kg}

crate is pushed by a force

F

making an angle of

30^{\circ}

below the horizontal on a rough floor. Take

g = 10\,\text{m/s}^2

and the coefficient of static friction as

\mu_s = 0.40

. The minimum magnitude of

F

needed to start moving the crate is nearly (a)

46\,\text{N}

(b)

73\,\text{N}

(c)

60\,\text{N}

(d)

50\,\text{N}