earlier today we talked about gravitational potential energy.
we discussed that in previous years, potential energy was given with the formula
E = mgh
where m is the mass, g is gravity (aka 9.8) and h is the height of the object.
today we went over a different equation.. one thats more constant.. because the first one, assumes gravity is constant, whcih it isnt.. the higher above the earth you are, the weaker gravity gets.
E = -(Gm1m2)/r
they are meant to be subscript 1 and 2 btw.. the m represents the mass of the two objects in which gravity is acting, and G is the constant gravity thing we were talkinga bout
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