One end of a string is secured to the ceiling and a metal ball of mass 50 g is tied to its other end. The ball is initially at rest in the vertical position. The ball is raised through a vertical height of 70 cm, as shown. The ball is then released. It describes a circular arc as it passes through the vertical position.

The length of the string is 1.50 m.
a. Ignoring the effects of air resistance, determine the speed v of the ball as it passes through the vertical position.
b. Calculate the tension T in the string when the string is vertical.
c. Explain why your answer to part b is not equal to the weight of the ball.

Transcribed Image Text:

string- metal ball 70 cm Figure 16.20