Question

The mass of a planet is half that of the earth and the radius of the planet is one fourth that of earth, If we plan to send an artificial satellite from the planet, the escape velocity will be $(V_e=11km{s}^{-1})$

• A. $11km{s}^{-1})$
• B. $5.5km{s}^{-1})$
• C. $15.55km{s}^{-1})$
• D. $7.78km{s}^{-1})$

Answer 1

Answer: (C)

$V=\sqrt{\frac{2GM}{R}}$