ball of mass 1.62 kg is tied to a string of length 2.59 m as shown in figure p6.50. The ball is initially hanging vertically and given an initial velocity of 6.7 m/s in the horizonal direction. The ball then follos a circular arc as determind by the string. what is the initial kinetic energy of the ball? what is the initial potential energy of the ball earth system? assume the height of the ball when it is hanging straight down is zero. what is the potential energy of the ball-earth system when the string makes an angle of 31 degrees with the vertical? what is the speed of the ball when the string makes an angle 31 degrees with the vertical?

ball of mass 1.62 kg is tied to a string of length 2.59 m as shown in figure p6.50. The ball is initially hanging vertically and given an initial velocity of 6.7 m/s in the horizonal direction. The ball then follos a circular arc as determind by the string. what is the initial kinetic energy of the ball? what is the initial potential energy of the ball earth system? assume the height of the ball when it is hanging straight down is zero. what is the potential energy of the ball-earth system when the string makes an angle of 31 degrees with the vertical? what is the speed of the ball when the string makes an angle 31 degrees with the vertical?