Question

According to Kepler, the period of revolution of a planet (T) and its mean distance from the sun (r) are related by the equation

• A. $T ^ { 3 } r ^ { 3 } =$constant
• B. $T ^ { 2 } r ^ { - 3 } =$ constant
• C. constant
• D. $T ^ { 2 } r =$ constant

Answer 1

Answer: (B)

$T ^ { 2 } r ^ { - 3 } =$ constant

Answer 2

$\frac { T ^ { 2 } } { r ^ { 3 } } =$ constant

$\Rightarrow T ^ { 2 } r ^ { - 3 }$= constant