Space dotpoint help (1 Viewer)

abdog

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How do you work this dotpoint out?

-define gravitational potential energy as the work done to move an object from a very large distance away to a point in a gravitational field
 
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RishadM

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Don't you just memorize what the dotpoint tells you lol. The answer is inside the dot point right?
 

abdog

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I don't understand the answer given... It's not clear enough
 

yasminee96

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Gravitational Potential Energy (GPE) is the energy of a mass due to its position within a gravitational field.
On a larger scale however,
GPE can be defined as the work done to move an object from infinity to a point within the gravitational field.

Ep=-(Gm1m2)/r
Where: Ep: Electrical Potential Energy (Joules)
G=6.67x10-11
m1m2: mass of objects
r: distance (km)

Ep at ∞> Ep at x (x,any point)
But Ep at ∞=0
Then,Ep at x<0
∴Ep=-(Gm_1 m_2)/r



this is what i wrote for it... but it simply is what's stated in the dotpoint :L
 

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