Two Masses Are Suspended by a Cord That Passes Over

Multiple Choice

Two masses are suspended by a cord that passes over a pulley with negligible mass.The cord also has negligible mass.One of the masses,m₁,has a mass of 7.0 kg and the other mass,m₂,has a mass of 3.0 kg.The pulley turns on a shaft through the center of the pulley and supports the pulley and all the masses.The vertical force of the shaft on the pulley that supports the whole system is

A) 49 N upward.
B) 49 N downward.
C) 82 N upward.
D) 82 N downward.
E) 98 N upward.