A 0.280 kg volleyball is rotating in a vertical circle at the end of a 1.25 m long string. 3. Calculate the minimum velocity of the ball at the top of the circle that would permit the ball to continue traveling in a circle. At the bottom of the same loop, the velocity of the ball is 2.20 times the velocity at the top of the circle. Calculate the tension force on the string when the ball is at the bottom of the loop. bottom USEFUL DATA Gravitational Constant Sidereal Period of Earth's Moon Synodic Period of Earth's Moon G = 6.67 x 10-11 Nm/kg 27.32 days 29.53 days F=md F =FN Body Sun Mass (kg) 1.99 x 1030 Mean Radius aR Distance from Sun (m) (m) 2r 6.96 x 108 v = =f.2r T Mercury 3.30 x 1023 2.44 x 106 5.79 x 1010 Venus 4.87 x 1024 6.05 x 106 1.08 x 1011 T= Earth 5.98 x 1024 6.38 x 106 1.50 x 1011 Earth's Moon 7.35 x 1022 1.74 x 106 FR=maR=m- 32 Mars 6.42 x 1023 3.40 x 106 2.28 x 1011 Jupiter 1.90 x 1027 7.15 x 107 7.79 x 1011 FG = Gmm Saturn 5.68 x 1026 6.03 x 107 1.43 x 1012 s Uranus 8.68 x 1025 2.56 x 107 2.87 x 1012 T Neptune 1.02 x 1026 2.48 x 107 4.50 x 1012