Answer to Question #204152 in Classical Mechanics for Mile

Question #204152

Mars has a radius of 3,390 km and a mass of 6.39 x 1023 kg.

a) What is the gravitational field strength on Mars?

b) How much would a 80kg person weigh on Mars?

 

 

 

 

 

 

 

 



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Expert's answer
2021-06-09T08:04:55-0400

a)

g=GMR2,g=G\frac{M}{R^2},

g=6.6710116.3910233.3921012=3.71 Nkg,g=6.67\cdot 10^{-11}\cdot \frac{6.39\cdot 10^{23}}{3.39^2\cdot 10^{12}}=3.71~\frac{N}{kg},

b)

P=mg,P=mg,

P=3.7180300 N.P=3.71\cdot 80\approx300~N.


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