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0 votes
4 answers
7k views

What is acceleration due to gravity at the centre of the earth? [duplicate]

When I asked my teacher that what is the acceleration at the centre of earth, he replied that it is 0 as when we move inside the earth, the effective mass decreases i.e. the mass that exerts ...
Awesome boy's user avatar
3 votes
2 answers
2k views

What exactly will happen if a small planet collides with Earth?

This is a video of a simulation of Ceres (a dwarf planet) hitting Earth at 2000km/s. What strikes me the most, is how fast the shockwave is moving. It takes about 6 minutes for the shockwave to pass ...
user's user avatar
  • 1,270
4 votes
3 answers
2k views

Are we increasing the gravity of Earth with our population?

I have these questions related to my question title: Do we, other species and things have our own gravity? How much Gs a human have? Are we effecting Earth, nearby moons and planets with our gravity?
Aishwarya Shiva's user avatar
-1 votes
1 answer
500 views

Motion of a ball in a tunnel along Earth's diameter [closed]

Suppose, a tunnel is made along the diameter of Earth and we drop a ball inside it. How will the ball behave? Please help me understand.
Razi Alam's user avatar