A block is to be pulled along a horizontal surface by a force that makes an angle…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

A block is to be pulled along a horizontal surface by a force

F

that makes an angle

\theta

above the horizontal. If the coefficient of static friction is

\mu_s = 0.50

, the angle

\theta

for which the required pulling force is minimum is closest to (a)

60^{\circ}

(b)

45^{\circ}

(c)

27^{\circ}

(d)

30^{\circ}