An object projected vertically up from the surface of the earth with a sufficiently high...

An object projected vertically up from the surface of the earth with a sufficiently high velocity v₀ can escape from the earth’s gravitational field. Calculate this velocity on the basis of the absence of an atmosphere to offer resistance due to air friction. To eliminate the effect of the earth’s rotation on the velocity measurement, consider the launch to be from the north or south pole. Use the mean radius of the earth and the absolute value of g as cited in Art. 1/5 and compare your answer with the value cited in Table D/2.