A pendulum consists of a sphere of mass 1.8 kg attached to a light cord of length 10.5 m as in the figure below. The sphere is released from rest when the cord makes a 43.6? angle with the vertical, and the pivot at P is frictionless. The acceleration of gravity is 9.8 m/s2. Find the speed of the sphere when it is at the lowest point. What is the tension of the cord at the lowest point? Answer in units of N