- #1
Raghav Gupta
- 1,011
- 76
Homework Statement
A planet of radius R = (radius of earth)/10 has the same mass density as earth. Scientists dig a well of depth R/5 on it and lower a wire of the same length and of linear mass density 10-3 kgm-1 into it. If the wire is not touching anywhere , the force applied at the top of the wire by a person holding it in place is ( take the radius of Earth = 6 x 106m and the acceleration due to gravity on Earth is 10 ms-2 )
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Homework Equations
I think there is some formula for gravitational acceleration when we dig a depth on planet.
Don't know that or the derivation.
The Attempt at a Solution
Density = mass/volume
Volume = 4/3πR3
I do not know what is happening by digging.