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Math Help - Creating a equation to destroy the sun

  1. #1
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    Creating a equation to destroy the sun

    Alright, Not the best at math and need help with find a equation for the amount of energy needed for destroying the sun. This isn't based on real life, based on a TV series and I'm nerdy enough to want to know how much energy it would take lol. I have a number for how much energy it would take to destroy the earth, so I'm hoping it would be easy enough to convert. Not sure what numbers you'll need, so I'm going to probably going to pot a few extra.

    Energy needed to destroy earth = x

    Mass of earth = 6 x 10⁴ kg
    Gravity of earth = 1
    Circumfrence of Earth = 40,000 km

    Mass of sun = 330,000 kg times earths mass or (21030 kg)
    Gravity of sun = 28 times earth's gravity
    Circumference of the sun = 4,300,000 km

    Energy needed to destroy sun = y

    Again not trying to solve for "x", trying to solve for y.

    So I'm assuming that since we have "x" the amount of energy needed to destroy earth, we can use that number along with the size of the earth, to determine the amount needed to kill something as big as the sun.
    The reason I post Circumference and Gravity is because there are 330,000 times as many particles on the sun then there is on eath, you have to push each of them 28 times as hard, and you have to spread your energy over a larger area, because not only is the sun more massive (mass) than the earth, but it is also much bigger(area) than the earth. plus, if you don't move the particles far enough, fast enough, it all just comes crashing back together, and you haven't accomplished your goal.

    So I'm hoping I explained this good enough and it's really simple. If you need more numbers let me know, I'm willing to go find them. Just give some feed back if this time of equation is even possible, and I appreciate the time anyone takes to even read this let alone try to solve it.
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  2. #2
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    Re: Creating a equation to destroy the sun

    This is extremely confusing. You ask about the energy required to destroy the sun but then say "Energy needed to destroy earth= x". So you want to find the energy required to destroy the sun as a multiple of the energy required to destroy the earth? Wouldn't that depend upon HOW you destroyed them?

    Also you say "Gravity of earth= 1". There is NO quantity called "gravity". There is the force due to gravity which varies with the mass of the gravitating object and distance from it. The is also the "force of gravity on a 1 kg object at the surface of the earth" but that is so specific I can't imagine what it would have to do with this problem.

    You say the mass of the sun is 330000 times earth's mass, and you can calculate, from the respextive circumferences, that the sun's volume is 160000 times the earth's volume. Now, I can imagine that the force required to "destroy" the sun would be proportional to the relative masses or to the relative volume's depending on exactly what you mean by "destroy" and how you were to do it.
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  3. #3
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    Re: Creating a equation to destroy the sun

    Quote Originally Posted by HallsofIvy View Post
    This is extremely confusing. You ask about the energy required to destroy the sun but then say "Energy needed to destroy earth= x". So you want to find the energy required to destroy the sun as a multiple of the energy required to destroy the earth? Wouldn't that depend upon HOW you destroyed them?

    Also you say "Gravity of earth= 1". There is NO quantity called "gravity". There is the force due to gravity which varies with the mass of the gravitating object and distance from it. The is also the "force of gravity on a 1 kg object at the surface of the earth" but that is so specific I can't imagine what it would have to do with this problem.

    You say the mass of the sun is 330000 times earth's mass, and you can calculate, from the respextive circumferences, that the sun's volume is 160000 times the earth's volume. Now, I can imagine that the force required to "destroy" the sun would be proportional to the relative masses or to the relative volume's depending on exactly what you mean by "destroy" and how you were to do it.
    Thanks for responding, like I said not the best at mathematics lol. But yes, the earth and sun are going to be destroyed with the same way which in this case would be a laser. The show I watch states how much energy it takes to destroy earth (can't remember the number, I'd have to re watch the episode.) that's why I don't need to find "x".

    But yeah, I was hoping there would be a way to create an equation together since we know how much it would take to destroy the earth. Let's just say x is 530,000 ut . So it takes 530,000 ut to destroy an object as big as the earth. Knowing that, would it be possible to know how much ut it would take to destroy the sun? We are assuming that the size of an object is the only thing that matters in destroying it.
    Last edited by hgviens07; February 16th 2013 at 12:58 PM.
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  4. #4
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    Re: Creating a equation to destroy the sun

    I found the equation I was looking for!

    If you're interested I found the equation I was looking for
    gravitational binding energy of sun - Wolfram|Alpha

    By plugging both the numbers for the earth and the sun into the equation I can get the amount of energy needed to destroy the earth and the sun. I then take those numbers and set them up using the direct variation formula.

    Thanks for taking your time to help, I really appreciate it.
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