As depicted in Fig. 9-5, a ball B is fastened to one end of a 24-cm string,

Question:

As depicted in Fig. 9-5, a ball B is fastened to one end of a 24-cm string, and the other end is held fixed at point O. The ball whirls in the horizontal circle shown. Find the speed of the ball in its circular path if the string makes an angle of 30° to the vertical. Fr cos 30 B Fw = mg 24 cm Fr 30 mv/r 30 Fig. 9-5 C