Yahoo Answers: Answers and Comments for Changes in gravitional potential energy HELP!? [Physics]
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From Evelyn R
enUS
Sat, 27 Jun 2009 17:32:32 +0000
3
Yahoo Answers: Answers and Comments for Changes in gravitional potential energy HELP!? [Physics]
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From Al P: Moving mass from infinity to configuration1:
...
https://answers.yahoo.com/question/index?qid=20090627173232AAipYUB
https://answers.yahoo.com/question/index?qid=20090627173232AAipYUB
Sat, 27 Jun 2009 20:41:20 +0000
Moving mass from infinity to configuration1:
G = 6.673 * 10 ^ 11 m^3 kg^1 s^2
m = 0.04 kg
r = 0.75 m
rd = Sqrt(2 * r ^ 2)
PE1 = G m ^ 2 / r
PE2 = (G m ^ 2 / r) + (G m ^ 2 / rd)
PE3 = (2 G m ^ 2 / r) + (G m ^ 2 / rd)
U1 = PE1 + PE2 + PE3
= 7.70753004836601E13 J
Moving mass from infinity to configuration2:
r = 0.25 m
rd = Sqrt(2 r ^ 2)
PE1 = G m ^ 2 / r
PE2 = (G m ^ 2 / r) + (G m ^ 2 / rd)
PE3 = (2 G m ^ 2 / r) + (G m ^ 2 / rd)
U2 = PE1 + PE2 + PE3
= 2.3122590145098E12 J
The change in the gravitational potential energy:
delta U = U2  U1 = 1.5415E12 J

From litzinger: the KE is maximum purely whilst the ball is re...
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https://answers.yahoo.com/question/index?qid=20090627173232AAipYUB
Wed, 02 Nov 2016 18:26:14 +0000
the KE is maximum purely whilst the ball is released into the air. that's as a results of fact, as a results of fact the ball is going up its velocity decreases and hence the KE,untill it reaches on the topmost place the place there is not any velocity and hence no and KE .So that's the ponit the place the ball might have maximum skill potential. that's as a results of fact the sum of PE and KE is a relentless