24. Calculate the orbital speed of the planet in the previous problem.Ipt) 23. A planet orbits the Sun at a distance of 2.87x109 km. If the mass of the Sun is 1.99x1030 kg, find the orbital period of the planet. Distance , r = 2 , 87 . 10 9 Km = 2. 87 - 10 m Mass of the Sun, M = 1. 99 . 1030 Kg T = 27 \\ + 3 GM Gravitational constant , G = 6. 67 . 10-" m3 Kq- 1 - 2 Orbital period, T = ? T = 27 1 ( 2 . 87 - 10 12 / 3 6.67-10-1- 1.89. 30 T= 2.652. 10 9 Seconds T = ( 2. 652 . 109) / (60. 60. 24) 23 . = 30690 . 186 days T= 30690. 186 days 30 inch