A strange unexplained force F is observed to depend on vertical position F(N) as shown in the graph at right. This force acts vertically upward on an object of mass m = 2 kg that is initially at rest aty = 2 m. 50 N 40 N 16) How much work does the force F do on the object by the 30 N time the object reaches vertical position y = 10 m? 20 N 10 N 2 4 6 8 10 12