Use the equations below: F_g = - GMm/r^2 U_g = - GMm/r Find F_g if G = 6.67 time

Question

Use the equations below: F_g = - GMm/r^2 U_g = - GMm/r Find F_g if G = 6.67 times 10^-11 m^3 middot kg^-1 middot S^-2, M = 2.6 times 10^23 kg, m = 1200 kg, and r = 2000 m. What is r if U_g = -7200 J, G = 6.67 times 10^-11 m^3 middot kg^-1 middot s^-2, M = 2.6 times 10^23 kg and m = 1200 kg? Using the 1^st equation in Section IV for this problem, find v in terms of r when K = -U_g G = 6.67 times 10^-11 m^3 middot kg^-1 middot s^-2 and M= 3.2 times 10^23 kg. Using the first equation above, describe how F_g changes if r doubles.

Explanation / Answer

According to the given problem,

28.) Using the fomula ,

K = -Ug

1/2mv2 = -GMm/r

v2 = -2GM/r

v = -2GM/r

v = -4.2688*1013/r

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