ksaimouli
how to caculate gravity on mars
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ksaimouli
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|dw:1358446444387:dw|
ksaimouli
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what is M and R
ksaimouli
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M is mass of mars
ksaimouli
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mass=6.6*10^23
ksaimouli
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radius=3450
ksaimouli
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G=6.67*10^-11
ksaimouli
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i should get 3.4 but i don't
ksaimouli
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i am got 3.6 after i divide 10^6 why should i divide by it
Shane_B
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Using your values:
\[\Large F_g=G\frac{M}{r^2}\]\[\Large F_g=6.67*10^{-11}m^3kg^{-1}s^{-2}\frac{6.6*10^{23}kg}{(3450000m)^2}=3.67m/s^2\]
And that's about right. If you look it up online you'll see that the force of gravity on Mars is about 38% that of Earth:\[0.38*9.8m/s^2=3.7m/s^2\]
Outkast3r09
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does it say whether It's of uniform density or does it give density?
ksaimouli
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i dont know
Outkast3r09
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well is 3.4 the answer in your book or did you look online fori t?