If a satellite is moved from one stable circular orbit to a farther stable circular orbit, then the following quantity increases
If a satellite is moved from one stable circular orbit to a farther stable circular orbit, then the following quantity increases
A. Linear orbital speed
B. Gravitational force
C. Centripetal accelerations
D. Gravitational P.E.
4 views
1 Answers
Correct Answer - D
Orbital speed `v_(c )=sqrt((GM)/(r ))`,
Gravitational force `prop (1)/(r^(2))`, c.p. acceleration `=(v^(2))/(r )`
All the three decrease as the orbital radius is increased. But the gravitational P.E. `= -(GMm)/(r )`.
It is given that `r_(2)gt r_(1)`. Hence the P.E. will increase, because of the -ve sign.
4 views
Answered