Physics

Physics

Problem

A

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}

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