A 100-M Rope Is Placed on a Rooftop That Is Pitched

Multiple Choice

A 10.0-m rope is placed on a rooftop that is pitched at 20°. The coefficient of static friction between the rope and the roof is 0.60. The longest length of rope that can safely hang over the edge of the roof without pulling the remaining rope off

A) is 1.0 m.
B) is 1.7 m.
C) is 2.5 m.
D) cannot be determined unless we know the total mass of the rope.