Two particles of mass M and 2M are at a distance d apart, they are moving towards each other under mutual force of attraction. The acceleration of their centre of mass is_____________

Dear sindhuja

F=G*2m*m/d²

acceleration of mass m= G*2m/d²

acceleration of mass 2m =-G*m/d²

so Acceleratin of center of mass ={m*G*2m/d²    -m*G*2m/d² }/(2m+m)

                                               =0

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