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At noon, the sun and the earth pull the objects on the surface of the earth in opposite directions. At mid night the sun and the earth pullthese objects in the same direction, then -

a. weight of an object measured by a spring balance on the earths surface, is more at mid night as compared to its weight at noon.

b. weight of an object measured by a spring balance on the earths surface, is equal at noon as it is at midnight.

and why ?

Asked by anirbanbag81 10th November 2017, 7:02 PM
Answered by Expert
Answer:

- The weights will vary with time sinusoidally but this change will be quite small.

- As the Earth's distance from the Sun is 149,600,000 km

and Radius of Earth = 6378.1 kilometers

- The change in distance is very small but not negligible.

- Hence the weight of an object measured by a spring balance on the earths surface, is more at mid night as compared to its weight at noon .

- Even the moon will play an important role in altering the weights of bodies on the surface of the Earth.

- It shuld be remembered that it is the moon's gravitational influence that leads to tides in the seas.



Answered by Expert 12th November 2017, 6:58 PM
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Tags: gravitation
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