A 060-Kg Object Is Suspended from the Ceiling at the End

Multiple Choice

A 0.60-kg object is suspended from the ceiling at the end of a 2.0-m string. When pulled to the side and released, it has a speed of 4.0 m/s at the lowest point of its path. What maximum angle does the string make with the vertical as the object swings up?

A) 61°
B) 54°
C) 69°
D) 77°
E) 47°