Question

两颗人造卫星A、B绕地球做匀速圆周运动，周期之比为T_A:T_B=1:8，则轨道半径之比和运动速率之比分别为

1. A.
   R_A:R_B = 4:1，υ_A: υ_B =1:2
2. B.
   R_A:R_B =4:1，υ_A: υ_B =2:1
3. C.
   R_A:R_B =1:4，υ_A: υ_B =1:2
4. D.
   R_A:R_B =1:4，υ_A: υ_B =2:1

Answer 1

D