Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

Franchisee/Partner Enquiry (South)

Franchisee/Partner Enquiry (North, West & East)

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

9372462318 / 9987178554

Mon to Sat - 10 AM to 7 PM

Explain why the value of g is zero at the center of earth

Asked by Vishwaspatil9386 14th March 2019, 9:06 AM
Answered by Expert
Answer:
Let us consider a point P inside the sphere of earth which is at a radial distance r from center of earth as shown in figure.
 
Gravitational field at P is  sum of the the gravitational field due to the outer shell and the gravitational field due to the solid sphere of radius r.
 
But according to shell theorem, gravitational field inside any point within the spherical shell is zero.
 
Hence only the solid sphere is contributing the graviatational field at P. Gravitational field is directly proportional to mass of sphere.
 
when we move our point p to the centre of earth, the sphere reduced to a point and its mass becomes zero.
 
Hence gravitational field at centre is zero.
Answered by Expert 14th March 2019, 10:46 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer 10/10

Tags: gravitation
Your answer has been posted successfully!

Chat with us on WhatsApp