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Introductory Physics Homework Help
Potential energy turned into kinetic
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[QUOTE="cragar, post: 4856965, member: 172154"] [h2]Homework Statement [/h2] We have an object with much smaller mass than compared to the sun. This object is at rest when released at 1AU from the sun. After a week how far is the mass from the sun. [h2]The Attempt at a Solution[/h2] So I look at the gravitational potential energy and set it equal to kinetic energy. [itex] \frac{-GMm}{r}=\frac{m(v)^2}{2} [/itex] the v should be an r dot. now I take the square root of both sides. and then multiply both sides by dt then move the r from the left side to the right side and then integrate bothe sides. this will give me r(t). and then for the bounds I use r=1au and then I can solve for r final. after using t=0 and t=1 week for the time. i will put the time in seconds. this seems somewhat reasonable. [/QUOTE]
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Potential energy turned into kinetic
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