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Grade: 12

                        

A tunnel is drilled from surface of earth to its center the radius of earth is R and G is the acceleration due to gravity on its sirface A body of mass m is dropped into tunnelcif M is the mass of the earth the speed with which body hits the bottom of tunnel??

4 years ago

Answers : (1)

Vikas TU
12120 Points
							
The body dropped would perform SHM that is simple ahrmonic motion.
Force inside the sphere = G(4*pi*r*p*m)/3
where p is M3R^3/4pi 
putt all the forces F =kr.
w = root(k/m)
put k value and mass body to get w.
 
4 years ago
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