﻿ The masses and radii of the earth and moon are M1, R1 and M2, R2respectively. Their centres are at distance d apart. What is the minimum speed with which a particle of mass m should be projected from a point midway between the two centres so as to escape to infinity? : Kaysons Education

# The Masses And Radii Of The Earth And Moon Are M1, R1 and M2, R2respectively. Their Centres Are At Distance d apart. What Is The Minimum Speed With Which A Particle Of Mass m should Be Projected From A Point Midway Between The Two Centres So As To Escape To Infinity?

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## Question

### Solution

Correct option is

Potential energy of m when it is midway between M1 and M2,

And as potential energy at infinity is zero, so work required to shift m from the given position to infinity,

As this work is provided by initial kinetic energy,

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