■解答
① \(\displaystyle\frac{GMm}{r_0^2}\) ② \(2\pi r_0 \sqrt{\displaystyle\frac{r_0}{GM}}\) ③ \(\displaystyle\frac{GMm}{2r_0}\)
④ \(-\displaystyle\frac{GMm}{2r_0}\) ⑤ イ ⑥ ア
⑦ \(mr_1\omega^2\) ⑧ \(\displaystyle\frac{1}{r_0}\sqrt{\frac{GM}{r_1}}\) ⑨ \(\displaystyle\frac{M}{M+m}r_0\)
⑩ \(2\pi r_0\sqrt{\displaystyle\frac{r_0}{G(M+m)}}\)
