A 1900 kg demolition ball swings at the end of a 15 m cable on the arc of a vertical circle. At the lowest point of the swing, the ball is moving at a speed of 7.4 m/s. Determine the tension in the cable.
also i know that the tension force has the same purpose as the normal force.
please help me with this one.
So calling the vertical direction the y axis:
and go from there.