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acceleration due to gravity. how much would a 65kg person weigh on this planet

Physics
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Mars has a mass of 6.46x10^23 kg and a radius of 3.39x10^6 m. (a) What is the acceleration due to gravity on Mars? (b) How much would a 65 -kg person weigh on this planet 

Oct 8th, 2014

F=GM m/r^2

We know that F= m x a 

m x a = GM m / r^2 here a is acceleration due to gravity 

a=GM/r^2

= (6.67×10^-11) × (6.46×10^23) / (3.39 × 10^6)^2 = 3.749 m/sec^2


So now to find weight of 65 kg person on mars . 

F= m x a =  65 x 3.749  = 243.685 N

Oct 8th, 2014

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Oct 8th, 2014
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Oct 8th, 2014
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