Archive
7th of March 2017
Physics
Q:

A space vehicle of mass m is in a circular orbit of radius 2 R subscript e space a b o u t space t h e space e a r t h space left parenthesis m a s s space m subscript e right parenthesis. space W h a t space i s space t h e space w o r k space d o n e space b y space a n space e x t e r n a l space a g e n t space t o space t r a n s f e r space i t space t o space a n space o r b i t space o f space r a d i u s space 4 R subscript e space ?

Akansha Banerjee - CBSE - Class XI Science

Tuesday, March 07, 2017 at 11:59:AM

A:

Hi,

Work done by the external agent is the difference in the energies of the two orbits.

W = Δ E

Substitute the formulae for energies using their respective radius in the above formula. 

Tuesday, March 07, 2017 at 18:05:PM