A Small Object of Mass M, on the End of a Light

Multiple Choice

A small object of mass m, on the end of a light cord, is held horizontally at a distance r from a fixed support as shown. The object is then released. What is the in the cord when the object is at the lowest point of its swing?

A) mg/2
B) mg
C) 2 mg
D) 3 mg
E) mgr