Question

The escape velocity of a sphere of mass m from earth having mass M and radius R is given by

• A. $\sqrt { \frac { 2 G M } { R } }$
• B. $2 \sqrt { \frac { G M } { R } }$
• C. $\sqrt { \frac { 2 G M m } { R } }$
• D. $\sqrt { \frac { G M } { R } }$

Answer 1

Answer: (A)

$\sqrt { \frac { 2 G M } { R } }$

Answer 2

Escape velocity does not depend on the mass of the projectile