1.) A planet has a diameter of 7.18×106 m and the free fall acceleration on this...
1.) A planet has a diameter of 7.18×106 m and the free fall acceleration on this planet is 6.19 m/s2. What is the mass of this planet?
6.66×1017 kg
1.20×1024 kg
3.33×1017 kg
4.78×1024 kg
2.) A 2.48 kg steel ball and a 1.18 kg wooden ball are 4.36 m apart form center to center. What is the gravitational force that they exert on each other?
1.81×10-11 N
0.671 N
8.70×10-12 N
1.03×10-11 N
Homework Answers
q2 =6.67*10^-11 * 1.18 *2.48 / ( 4.36^2 ) =1.02680162e-11 N last option
q1
accleration g = GM/r^2
6.19 = 6.67*10^-11 * x / ( 0.5 *7.18*10^6 ) ^2
x = M = 1.2 *10^24 kg
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