Question

Find the escape velocity of a body from the earth.

[M(earth) = 6 × 10²⁴ kg, R (earth) = 6.4 × 10⁶ m, G = 6.67 × 10^-11 N.m²/ kg²]

Answer 1

Data: M = 6 × 10²⁴ kg, R = 6.4 × 10⁶ m,

G = 6.67 × 10^-11 N.m²/kg²

The escape velocity of a body from the earth,

= 1.118 x 10⁴ m/s = 11.18 Km/s.