gravitational force question Watch

sheepshap
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[ATTACH=CONFIG]253941[/ATTACH[ATTACH=CONFIG]253941[/ATTACH

How do you fo q3 the answer is 36kg

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uberteknik
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(Original post by sheepshap)
[ATTACH=CONFIG]253941[/ATTACH[ATTACH=CONFIG]253941[/ATTACH

How do you fo q3 the answer is 36kg

Thanks
Are there any Australians in the audience tonight?

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Posting the question in a more readable way round may help get an answer. lol.
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sheepshap
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Ooops

two small spheres of mass 4kg and M kg are placed 80cm apart. If the gravitational force is zero at a point 20 cm from the 4 kg mass along the line bewteen the two masses, calculate the value of M.
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sheepshap
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(Original post by uberteknik)
Are there any Australians in the audience tonight?

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Posting the question in a more readable way round may help get an answer. lol.
Please help me
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Stonebridge
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(Original post by sheepshap)
Please help me
The way it works here is
-you post a question
-say how far you've got with it or what equations you know that might apply
-say where you are stuck or at least show you have made some effort

This will ensure you get some help.
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sheepshap
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(Original post by TopEngineer007)
Do you know the equation F = GMm/r^2?
I got this far:
GMm/ r^2 =0
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sheepshap
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Bump!
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Stonebridge
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(Original post by sheepshap)
I got this far:
GMm/ r^2 =0
What is the value of r at the point where the force is zero.
Which mass, the M or the 4kg, are you measuring it from?
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