dave is the first person verfied to have complete circled the entire the earth on foot which is 23,255 km in 4 years . let us assume he travelled in a perfect circle around earth . now he digs a tunnel through the center of the earth penetrating it to other side of earth .how much time approximately will it take for him to go to the other side and come back in foot(assume he travel at a constant speed)
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Firstly, he couldn't cross the earth's surface by walking and any machine is still not made to have heat resistance for more than 10000 degrees Celsius.
Let us imagine if he could go, he will have to take greater force to go in, as the gravity increases as we go down and when we reach the center, we would go freely because there is no gravity in the center so it would not be possible to cross earth through center.
Let us imagine if he could go, he will have to take greater force to go in, as the gravity increases as we go down and when we reach the center, we would go freely because there is no gravity in the center so it would not be possible to cross earth through center.
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Answer:
I have done some mess work so I would explain it...
Explanation:
Equating both the equation
πD/t=D/t'
t'=πD/t÷1/D
t'=t/π
t'=4/π
4/π=4/22/7
=28/22
=1.27272727........
≈1.27 years
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