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प्रश्न
Is there any meaning of “weight of the earth”?
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उत्तर
The weight of a body is always due to its gravitational attraction to earth. As law of gravitational attraction is universal so it applies to any two bodies (earth and sun as well). So we can define the weight of earth with respect to a body of mass comparable to or greater than earth’s, due to the gravitational attraction between earth and that body. But practically nobody on earth has mass comparable to earth, so the weight of earth will be a meaningless concept with respect to the earth frame.
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संबंधित प्रश्न
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A particle is fired vertically upward from earth's surface and it goes up to a maximum height of 6400 km. Find the initial speed of particle.
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Explain the variation of g with depth from the Earth’s surface.
Suppose we go 200 km above and below the surface of the Earth, what are the g values at these two points? In which case, is the value of g small?
Calculate the change in g value in your district of Tamil nadu. (Hint: Get the latitude of your district of Tamil nadu from Google). What is the difference in g values at Chennai and Kanyakumari?
One can easily weigh the earth by calculating the mass of the earth by using the formula:
Which of the following options are correct?
- Acceleration due to gravity decreases with increasing altitude.
- Acceleration due to gravity increases with increasing depth (assume the earth to be a sphere of uniform density).
- Acceleration due to gravity increases with increasing latitude.
- Acceleration due to gravity is independent of the mass of the earth.
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