Question

a body weighs 90 KGF on the surface of earth how much it will weight on the surface of Mars if the radius of mass is 1/2 and mass of Mars is 1/9 of that of Earth?​

Answer 1

=90×1/9×1/2

=10×1/2

=5 kg

therefore , it will weigh only 5 kg on mars

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Answer 2

Answer:

Answer:

The body weight is 90Kgf

so,the mass is 90N

Mass of mars =1/9

Radius =1/2 of earth

F=mg=m(G M/Re 2)

F mars /F earth = m (G M / R e 2)mars/m (G M/R e 2)earth

F mars/90 kg =(M earth/9)/m earth *(r earth)e 2/{r earth /2}e 2

=4/9

=90*4/9

=>mass of mars =40Kgf