Consider a star of mass m₂ ~kg revolving in a circular orbit around another star of mass m₁ ~kg with m₁ m₂ . The heavier star slowly acquires mass from the lighter star at a constant rate of kg / s . In this transfer process, there is no other loss of mass. If the separation between the centers of the stars is r , then its relative rate of change 1 r ~d r ~d t ( . in s .⁻¹ ) is given by: [Note: The original question