FR Bending of Light -- Proof
in [Relativity]
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From: Phil Bouchard on 27 Jan 2010 14:35 Androcles wrote: > > Very logical. And since v is relative then energy must be relative too. > How much potential energy does a rock have if it is on the floor above > you? PE = m_rock * g * h_floor > How much potential energy does a rock have if it is two floors above > you? PE = m_rock * g * h_floor * 2 > How much potential energy does a rock have if it is on the floor below > you? PE = m_rock * g * - h_floor
From: Androcles on 27 Jan 2010 14:43 "Phil Bouchard" <phil(a)fornux.com> wrote in message news:4b609581$1(a)news.x-privat.org... > Androcles wrote: >> >> Very logical. And since v is relative then energy must be relative too. >> How much potential energy does a rock have if it is on the floor above >> you? > > PE = m_rock * g * h_floor > >> How much potential energy does a rock have if it is two floors above >> you? > > PE = m_rock * g * h_floor * 2 > >> How much potential energy does a rock have if it is on the floor below >> you? > > PE = m_rock * g * - h_floor Ok, so PE can be negative. Now the rock falls and the PE is converted to KE. What is the KE of 1/2 m_rock * v^2 when v is negative?
From: Phil Bouchard on 27 Jan 2010 14:53 Androcles wrote: > > Ok, so PE can be negative. > Now the rock falls and the PE is converted to KE. > > What is the KE of 1/2 m_rock * v^2 when v is negative? KE = 1/2 m_rock * v^2 KE will always be positive.
From: Androcles on 27 Jan 2010 15:26 "Phil Bouchard" <phil(a)fornux.com> wrote in message news:4b6099c1$1(a)news.x-privat.org... > Androcles wrote: >> >> Ok, so PE can be negative. >> Now the rock falls and the PE is converted to KE. >> >> What is the KE of 1/2 m_rock * v^2 when v is negative? > > KE = 1/2 m_rock * v^2 > > KE will always be positive. "Negative PE converts to positive KE." - Phil Bouchard. Illogical idiot alert!
From: PD on 27 Jan 2010 15:34
On Jan 27, 2:26 pm, "Androcles" <Headmas...(a)Hogwarts.physics_s> wrote: > > "Negative PE converts to positive KE." - Phil Bouchard. > Illogical idiot alert! Oh, Androcles, surely you can't be so stupid as to think you've laid an artful trap. Well, maybe for a buffoon like Phil, yes, but if you really believe this is a fundamental problem with the law of conservation of energy, then it's time to get the rust-brush out again. (But you and I know that you're just playing little games for the purposes of heckling.) |