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Physics
Physics
Problem
Two satellites A and B revolve in coplanar circular orbits of radii
r
A
r_A
r
A
and
r
B
r_B
r
B
around the same planet. If
r
B
=
4
r
A
r_B = 4\,r_A
r
B
=
4
r
A
, which of the following is correct about their orbital speeds
v
A
v_A
v
A
and
v
B
v_B
v
B
? a)
v
B
=
2
v
A
v_B = 2\,v_A
v
B
=
2
v
A
b)
v
B
=
v
A
2
v_B = \dfrac{v_A}{2}
v
B
=
2
v
A
c)
v
B
=
v
A
4
v_B = \dfrac{v_A}{4}
v
B
=
4
v
A
d)
v
B
=
v
A
v_B = v_A
v
B
=
v
A
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