1.

A system of binary stars of masses m_A and m_Bare moving is a circular orbits of radiusr_A .and r_Brespectively. If T_A and T_Bare the time periods of masses m_A and m_Brespectively then,

Answer»

`T_A = T_B`
if ` m_A GT m_B " than " T_A gt T_B`
If ` r_B gt r_A` than ` T_B gt T_A`
`T_A/T_B = (r_A/r_B)^(3//2)`

SOLUTION :`(Gm_A m_B)/((r_A + r_B)^2) = (m_Ar_A 4pi^2 )/(T_A^2) = (m_Br_B 4pi^2)/(T_B^2)`
`m_A = m_B r_B , T_A = T_B`


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