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2006-07-23 07:45:37 · 7 answers · asked by goring 6 in Science & Mathematics Physics

according to Newton gravity theory the period of a pendulum clock formula is;
T^2 = LENGHT OF PENDULUM DIVIDED BY ACCELERATION DUE TO GRAVITY.

2006-07-23 07:59:41 · update #1

Would it be different if we use Relativity theory?

2006-07-23 08:02:23 · update #2

7 answers

Super question. Yes but only imperceptibly. In the order of fractions of a nanosecond.
One: the swing of the pendulum is affected by the force of gravity. The higher the elevation the weaker the force gets, the slower the pendulum swings ie; Newtonian physics.
Two, the faster the object the more slowly time moves within it’s relative reference frame; Einsteinian special relativity.
Thirdly, weaker gravitational field yields to a space-time contraction; General Relativity principle.
So even raising the pendulum a few inches will alter it’s rate. But it will only do so to an incredible small and undetectable amount. On the other hand experiments have been done in jet planes using atomic clocks which have demonstrated these theories of our universe to be correct and yes, the atomic clocks did slow down !
Amazingly it only takes a little study of algebra and physics to understand how this is so.

2006-07-23 08:18:46 · answer #1 · answered by Anonymous · 0 0

Actually that's a good question. Pendulum's are affected by the spin of the earth as well and don't only go back and forth. If in an airplane, it is isolated from this spin, unless the plane follows an exact path along a line of latitude. That is a very complex question. What if it is following a meridian?

We need more info.

2006-07-23 14:50:38 · answer #2 · answered by Anonymous · 0 0

I think it would be affected if the jet was rolling around as it would hit the sides of its container. This is surely the reason why they took so long to create a clock to take with them sailing in the 1700s so that they could measure longitude accurately.

2006-07-23 14:49:57 · answer #3 · answered by the_emrod 7 · 0 0

As long as the jet is traveling at a constant rate of speed. Accel or decel will affect the pendulum.

2006-07-23 14:48:43 · answer #4 · answered by oldmoose2 4 · 0 0

A pendulum isn't affected by gravity.

2006-07-23 14:47:17 · answer #5 · answered by ? 2 · 0 0

If you could remove all motion of the aircraft, and your traveling east, the pedulum would swing a fraction slower than on earth. It's the same reason why astronauts age slower while in orbit around the earth. The faster you move, the slower time elapses.

2006-07-23 14:58:33 · answer #6 · answered by Faulk 2 · 0 0

I DONT KNOW WHAT A PENDULUM CLOCK IS SO I CANT HELP YOU SORRY

2006-07-23 14:53:06 · answer #7 · answered by casper 6 · 0 0

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