A.运行的线速度大于第一宇宙速度 | ||
B.运行的线速度大小为
| ||
C.运行时的向心加速度大小为
| ||
D.地球表面的重力加速度大小可表示为
|
GMm |
r2 |
v2 |
r |
|
2πr |
T |
2π(R+h) |
T |
4π2r |
T2 |
4π2(R+h) |
T2 |
GMm |
r2 |
4π2r |
T2 |
4π2(R+h)3 |
T2 |
GMm |
R2 |
4π2(R+h)3 |
R2T2 |
A.F引=G
| B.F引≠G
| ||||||||
C.F引=G
| D.F引≠G
|
A.![]() | B.![]() | C.![]() | D.![]() |
r3 |
T2 |
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