The Escape velocity from the Earth for a body of mass 100 g is 11.2 1 km/s. What will be its value for a body of 20 g? Justify.
Answers
Given info : The escape velocity from the earth for a body of mass 100g is 11.21 km/s.
To find : what will be its value for a body of 20g and also justify your answer.
solution : escape velocity of a planet/celestial object is the minimum speed of a free body by which it escapes from the planet/celestial object and never comes back again in their gravitational field.
it is given by, v = √(2gR)
where R is radius of planet/celestial object , G is gravitational constant.
here you see, escape velocity never depends upon mass of the free body.
so escape velocity for a body of mass 20g is also 11.21 km/s [the same value ]
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