The escape velocity from the Earth’s surface is v. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is
The escape velocity from the Earth’s surface is v. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is

(1) v                                       (2) 2v
(3) 3v                                     (4) 4v

Solution: Answer (4)

Escape velocity from the Earth’s surface is given by: