A Concrete Block Is Pulled 7

Multiple Choice

A concrete block is pulled 7.0 m across a frictionless surface by means of a rope.The tension in the rope is 40 N; and the net work done on the block is 247 J.What angle does the rope make with the horizontal?

A) 28°
B) 41°
C) 47°
D) 62°
E) 88°