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What effect would the temperature have on the time kept by a pendulum clock made of iron bar?
Wiki User
∙ 11y ago
I think you're saying that the pendulum itself is an iron bar.
-- The period of the swing is determined by the pendulum's length. Whether the pendulum
is a long distributed mass, or just all one lump down at the end, its effective length in
either case is the distance from the pivot to its center of mass.
-- Rising temperature makes the iron bar longer, but doesn't change its mass. So its
center of mass becomes farther from the pivot, and its period of swing increases.
-- So higher temperature would make the clock run slower.
This sounds like an elegant way to detect small differences in local gravity at different
places. I don't know for a fact, but I'll just bet that this is how it's actually done, with
a portable instrument based on a pendulum-regulated timekeeping device.
Wiki User
∙ 11y ago
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What effect would the temperature have on the time kept by pendulum clock if the pendulum rod increased in length with an increase in temperature?
A longer pendulum will result in a longer period. The clock would go slower.
What effect would the temperature have on the time kept by a pendulum clock if the pendulum rod increase in length with an increase in temperature?
The angular frequency w of a pendulum under the force of gravity isw = Sqrt(g/L)where g is the gravitational acceleration at the Earth's surface. Most materials tend to expand when their temperature is increased. If L increases, the quantity g/Ldecreases, and therefore w decreases. This will have the effect of slowing down the pendulum rod and therefore slowing down the clock.
What advantage did the pendulum-clock have over devices such as water-clocks and sand-glasses?
The pendulum clock was the most accurate clock of its time. A disadvantage was that if in the sun too long it would heat up the pendulum and it would change the speed of it.
Why is a clock's pendulum shortened in summer?
I didn't know that this is standard practice, but it certainly makes sense ...In modern clocks, the pendulum rod is some solid material such as metal or wood. In either case, long-term higher temperature would cause the rod to expand slightly, which in turn would slightly lengthen the pendulum's period. Doesn't have to be much, but the clock definitely slows down, and loses time over an extended period.In order to compensate for the lengthening of the pendulum and slowing of the clock when the temperature rises, the rod should be slightly shortened.
Why didn't navigators on sailing ships just use a pendulum clock to keep time?
Pendulum clocks have a pendulum that moves, so on a moving ship the clock would not work right. The ships movement would throw off the clock telling the right time.
What would be an antonym for pendulum?
well pendulum is like a clock, so think of something that CAN'T tell time
Would you find a pendulum on a colck?
Yes. Usually in a grandfather clock.
What is effect on time period of simple pendulum at centre of earth?
At the center of the Earth there would be no effective gravity; a pendulum wouldn't work as a pendulum.
What would make a clock pendulum start swinging once it's stopped for days?
Only an external FORCE acting on the Pendulum could realistically restart the clockworks.
Why wouldn't a pendulum clock wouldn't work properly on the moon?
Because there is very little gravity there and so everything is lighter, meaning the pendulum would not swing the way it does on Earth.
What happens to the path of a pendulum over a day?
if the pendulum is free to swing in any direction (not constrained to a single plane, as is the pendulum in a pendulum clock), this is called a Foucault pendulum, and each swing will be slightly offset from the previous one due to the rotation of the Earth. If you were to attach a pen to the bottom of a Foucault pendulum, over the course of time it would make a tremendously complicated spirograph pattern.
What will be the effect of time period of a simple pendulum if its mass is doubled and its amplitude is halved?
The PERIOD of a Simple Pendulum is affected by its LENGTH, and NOT by its Mass or the amplitude of its swing. So, in your case, the Period of the Pendulum's swing would remain UNCHANGED!
