Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

As one moves to a place 3200 Km above the earth's surface, the acceleration due to gravity reduces to 4/9 of its value at the earth's surface. Calculate the radius of the earth from this data?
Asked by rajneesh kumar | 13 Sep, 2013, 11:09: AM
Expert Answer
height above earth's surface, h = 3200 km
let radius of earth = R
thus according to the following expression for acceleration due to gravity.
g = GM/R2 at the surface of earth    -1
at height h, distance between this point and the center of earth, H = 3200 + R
4g/9 = GM/H2                               -2
thus dividing equation 1 and 2
 
4/9 = (R/H)2
or 4/9 = (R/(3200 + R))2
 
this can be solved easily to calculate R
Answered by | 13 Sep, 2013, 11:31: PM
CBSE 9 - Physics
Asked by advscjaglan | 09 Aug, 2022, 08:22: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by munendramishra478 | 12 Jul, 2022, 08:42: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by sumantk60559 | 10 Jun, 2022, 07:18: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by rk7213908 | 21 Feb, 2022, 04:48: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by princemodi2580 | 31 Dec, 2021, 07:06: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by mj2692076 | 31 Dec, 2021, 04:11: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by kalpanatiwaritiwari7030 | 22 Dec, 2021, 07:35: PM
ANSWERED BY EXPERT
Season Break Offer!
Get 60% Flat off instantly.
Avail Now
×