Two uniform solid spheres held fixed of equal radii R, but mass M and 4M have centre to centre separation 6R. A projectile of mass m is projected from the surface of the sphere of mass M directly towards the centre of the second sphere. Obtain an expression for the minimum speed v of the projectile so that it reaches the surface of the second sphere.

Two uniform solid spheres held fixed of equal radii R, but mass M and

1.	Two uniform solid spheres held fixed of equal radii R, but mass M and 4M have centre to centre separation 6R. A projectile of mass m is projected from the surface of the sphere of mass M directly towards the centre of the second sphere. Obtain an expression for the minimum speed v of the projectile so that it reaches the surface of the second sphere.
Answer» Two uniform solid spheres held fixed of equal radii $R$ , but mass $M$ and $4 M$ have centre to centre separation $6 R$ . A projectile of mass $m$ is projected from the surface of the sphere of mass $M$ directly towards the centre of the second sphere. Obtain an expression for the minimum speed $v$ of the projectile so that it reaches the surface of the second sphere.

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