Question

When escape velocity is given to a particle on surface of earth, its total energy is

Answer 1

Explanation:

Escape velocity is defined as the minimum velocity given to a mass to escape the gravitational potential and reach infinity (where potential is zero) when velocity becomes zero. Hence the kinetic energy given initially is equal to the negative potential in the beginning. Hence total energy is zero

Answer 2

Answer:

answer is zero.

Explanation:

we know, total energy of a particle on earth's surface is

e' =kinetic energy+ potential energy

but when this particle escapes the earth's pull of gravity

it comes to rest at infinite distance

hence its energy becomes zero at infinite

e"= 0

by law of conservation of energy

e'=e"

hence total energy is 0