Planet A has mass M and radius R. Planet B has half the mass and half the radius of Planet A. If the escape velocities from the Planets A and B are vA and vB, respectively, then ${{{v_A}} \over {{v_B}}} = {n \over 4}$. The value of n is :

Question

Planet A has mass M and radius R. Planet B has half the mass and half the radius of Planet A. If the escape velocities from the Planets A and B are v_A and v_B, respectively, then ${{{v_A}} \over {{v_B}}} = {n \over 4}$. The value of n is :

Solution

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