The mass and diameter of a planet are twice those of earth. The period of oscillation of pendulum on this planet will be (if it is a second’s pendulum on earth) Read More »
The escape velocity from the earth is about 11 km/second. The escape velocity from a planet having twice the radius and the same mean density as the earth, is Read More »
The velocity with which a projectile must be fired so that it escapes earth’s gravitation does not depend on Read More »
