I thought I did this problem correctly but when I submit my answer it says other wise.(adsbygoogle = window.adsbygoogle || []).push({});

Here is the problem: The mass of a robot is 5440kg. This robot weighs 3610N more on planet A than it does on planet B. Both planets have the same radius of [tex]1.33 * 10^7m[/tex]. What is the difference [tex]M_{A} - M_{B}[/tex] in the masses of these planets?

And I my answer must be in kg.

So I know to use:

[tex]W = G \frac{M_{E}m}{r^2}[/tex]

My answer for the mass on planet B was 12272.1 and for planet A was 13103.1. But when subtracting A - B my answer is wrong.

What am I doing wrong?

Thanks in advance for any help provided.

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# Homework Help: Gravitational Force

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