A body with a gravitational force of 2000 N is pulled along a horizontal surface at constant speed by a rope, which makes an angle of 20° above the horizontal. If the force on the rope is 150 N, the coefficient of sliding friction is:
A. 0.0257
B. 0.0275
C. 0.0275 N
D. 0.0656
E. 0.0704
Answer: E