GravitationEasy
Question
If the distance between the earth and the sun is half of its present value, the number of days in year would have been
Options
A.64.5
B.129
C.182.5
D.730
Solution
From Kepler′s third law
T2 ∝ (r)3 or T ∝ (r)3/2
∴
or T2 T1 ×
= (365) × 
T2
129 days.
T2 ∝ (r)3 or T ∝ (r)3/2
∴
or T2 T1 ×
= (365) × T2
129 days. Create a free account to view solution
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