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Physics
Physics
Problem
A binary star system consists of two stars
A
A
A
and
B
B
B
which have time period
T
A
T_A
T
A
and
T
B
T_B
T
B
, radius
R
A
R_A
R
A
and
R
B
R_B
R
B
and mass
M
A
M_A
M
A
and
M
B
M_B
M
B
. Then a. if
T
A
>
T
B
T_A > T_B
T
A
>
T
B
then
R
A
>
R
B
R_A > R_B
R
A
>
R
B
b. if
T
A
>
T
B
T_A > T_B
T
A
>
T
B
then
M
A
>
M
B
M_A > M_B
M
A
>
M
B
c.
(
T
A
T
B
)
2
=
(
R
A
R
B
)
3
\left(\frac{T_A}{T_B}\right)^2 = \left(\frac{R_A}{R_B}\right)^3
(
T
B
T
A
)
2
=
(
R
B
R
A
)
3
d.
T
A
=
T
B
T_A = T_B
T
A
=
T
B
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