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Using the formula for gravity, find the force of gravity on a 1.2-kg mass at Earths surface. (The mass of Earth is 6 x 10M k

く1024 kg) and the Moon mass-74x 1022 kg Find the force of gravity between Earth (mass-6.0 is 3.8 x 108 m. The average Earth M

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Answer #1

a)

Gravitational force between two objects is given by

F=Gm1m2/r2

F=(6.67*10-11)(6*1024)(1.2)/(6.4*106)2

F=11.72 N

b)

F=(6.67*10-11)(6*1024)(7.4*1022)/(3.8*108)2

F=2.05*1020 N

c)

F=(6.67*10-11)(6.4*1024)(3.2)/(5.6*1010)2

F=4.356*10-8 N

d)

F=(6.67*10-11)(6*1024)(0.6)/(1.9*107+6.4*106)2

F=0.372 N

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