Question

1. The farthest planet in the solar system has an average distance from the Sun of 5.9 x 109 km and a mass of 1.99 x 1030 kg. The period of this planet around the Sun is:

25 and
78 and
247 and
782 and

2. The gravitational attraction of a 100 kg satellite in a circular orbit around the Earth with a period of 6 hours is:

89 N
138 N
224 N
876 N

Answer 1

Time period given, - of the metion is vam m= mass, arround which planet is rebating r= Radius of the erbital mations go, T 213014 15.9x108x163)3 6.67 x 10 x 1.99x1050 2 To 7.8x10] seen T = 78X10 GoX60124 X365 T= 247 years of earth m- cooler, rétate arround the earth with a time period To Ghouls Taraf and W = 20 go, ezzo , T = 64 Go X Go seconds G= 6-67 x60" N -mallega, and Mimass of earth) = 6x1024 kg. - 6x3600 = 2 3 - V G. 67 x0x6x26 27 r - 1.679x107 meter Force - Gmm a 100 6-67 xao x 6X204 x (1679x1072 730 Nenton]