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A 0.160-kg ball attached to a light cord is swung in a vertical circle of radius 70.0 cm. At the top of the swing, the speed of the ball is 3.26 m/s. The center of the circle is 1.50 m above the floor.
a. Draw a free-body diagram of the forces on the ball at the top of the swing
b. Calculate the magnitude of the tension in the cord at the top of the swing. Show all your work.
c. Calculate the mechanical energy of the ball at the top of the swing with respect to the floor.
d. Calculate the speed of the ball when the cord is 30 degrees below the horizontal
e. Determine the magnitude of the tension in the cord when the cord is 30 degrees below the horizontal
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