A crate is pulled at constant speed across a horizontal floor by a rope that makes an…

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

Problem

25\,\text{kg}

crate is pulled at constant speed across a horizontal floor by a rope that makes an angle of

30^{\circ}

above the horizontal. The coefficient of kinetic friction between the crate and the floor is

\mu_k = 0.25

. What is the magnitude of the tension in the rope? (Use

g = 9.8\,\text{m/s}^2

.) (a)

71\,\text{N}

(b)

62\,\text{N}

(c)

55\,\text{N}

(d)

83\,\text{N}