Space dotpoint help (1 Viewer)

[abdog]

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

 

[RishadM]

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

 

[abdog]

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

 

[yasminee96]

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

 

[jamesischool]

is this a new dot point?
i dont have it in my notes from last year :/

 

[nightweaver066]

is this a new dot point?
i dont have it in my notes from last year :/

It's always been there.