Gravity Power Plant Feasibility: Explained

AI Thread Summary
The discussion revolves around the feasibility of gravity power plants, questioning their practicality compared to existing hydro-dams that utilize gravity to generate power. Participants express confusion over the term "gravity power plant," often associating it with unrealistic perpetual motion concepts. The video referenced fails to clarify how the proposed power plant would generate energy, leaving doubts about its legitimacy. Overall, the conversation highlights skepticism regarding the viability of such technology without a clear explanation of its operational principles. The topic remains contentious due to the lack of concrete information provided.
deepthishan
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Is this really feasible? http://www.indianexpress.com/video/national/6/a-power-plant-running-on-gravity/7117

and if so, can anyone please explain to me how?
 
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We already have power plants that run on gravity. They are called hydro-dams. The sun vaprorizes water. We dam up the rivers and streams that collect the water and use the head-differential to power turbine-generators.
 
Thank you Turbo! I did not understand the term gravity power plant
 
Typically when people say "gravity power plant", they mean a crackpot perpetual motion machine that uses unbalanced wheels or something of the sort. This particular video says nothing at all about how the power plant gets its energy, so we really don't know if it is something mundane or a crackpot perpetual motion machine scheme that doesn't work.
 
I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
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