how will be pendulum clock be affected if it is taken to the equator ?
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oscillation goes slightly slower at the pole.
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sharmavyoamblyoyd2qv:
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Happily, for some of us staying close to the equator, we will not experience the more spin effect except in things like the faster pendulum clock which spooked the 17th Century French astronomer. The explorer, Jean Richer, realised that his clock runs 2.5 minutes late

If we take a look at the period (T) of oscillation of a pendulum clock is a function of acceleration due to gravity in the area (g)
T≃2 π√(L/g)
where the L= length of the pendulum.
If a location has more gravity pull (g), the period will be shorter. A shorter period means the pendulum will swing faster.
Jean Richer, observed that the pendulum clock was slower by 2 1⁄2 minutes in Cayenne when compared to the time at Paris.
This phenomenon was because French-Guyana, the east coast of Soth American is nearer the equator compared to Paris. This fact makes the gravitational force not to be the same. Jean Richer inadvertently became the first person to notice that gravity is not the same at all locations on Earth due to the oblate shape of it.
Later, scientists were able to confirm the value of gravitational accerlaeration in Paris to be approximately 9.811 m/s2, while that of Cayene is approximately 9.781 m/s2
The favourite gravitational constant magnitude value of 9.81m/s2 is an average one taken to make high school physics classes easier.
Time goes a little bit slower at the equator than at the poles. The time is not the only thing affected; people also weigh less at the equator than at areas far from it, e.g. the Poles.

Sunset at Hudson Bay Canada By Gerald Ludwig, U.S. Fish and Wildlife Service [Public domain], via Wikimedia Commons from Wikipedia Commons
The equator may not be the only factor responsible for the different weight, however small, across the Earth's surface. Such place with very low gravity is Hudson Bay located in the northeastern part of Canada. The difference in gravity, though small (0.0005%), makes a significant difference.
The anomaly was a result of the recovering rocks in the area that was compressed by ice (during the ice age) which ended some 20,000 years ago. The melting ice creates convection current under the earth's mantle which in turn pulls off more of the Earth's mass on that location thereby reducing the gravity in the location. People over there will weigh less than their compatriots elsewhere.

If we take a look at the period (T) of oscillation of a pendulum clock is a function of acceleration due to gravity in the area (g)
T≃2 π√(L/g)
where the L= length of the pendulum.
If a location has more gravity pull (g), the period will be shorter. A shorter period means the pendulum will swing faster.
Jean Richer, observed that the pendulum clock was slower by 2 1⁄2 minutes in Cayenne when compared to the time at Paris.
This phenomenon was because French-Guyana, the east coast of Soth American is nearer the equator compared to Paris. This fact makes the gravitational force not to be the same. Jean Richer inadvertently became the first person to notice that gravity is not the same at all locations on Earth due to the oblate shape of it.
Later, scientists were able to confirm the value of gravitational accerlaeration in Paris to be approximately 9.811 m/s2, while that of Cayene is approximately 9.781 m/s2
The favourite gravitational constant magnitude value of 9.81m/s2 is an average one taken to make high school physics classes easier.
Time goes a little bit slower at the equator than at the poles. The time is not the only thing affected; people also weigh less at the equator than at areas far from it, e.g. the Poles.

Sunset at Hudson Bay Canada By Gerald Ludwig, U.S. Fish and Wildlife Service [Public domain], via Wikimedia Commons from Wikipedia Commons
The equator may not be the only factor responsible for the different weight, however small, across the Earth's surface. Such place with very low gravity is Hudson Bay located in the northeastern part of Canada. The difference in gravity, though small (0.0005%), makes a significant difference.
The anomaly was a result of the recovering rocks in the area that was compressed by ice (during the ice age) which ended some 20,000 years ago. The melting ice creates convection current under the earth's mantle which in turn pulls off more of the Earth's mass on that location thereby reducing the gravity in the location. People over there will weigh less than their compatriots elsewhere.
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