5 Suppose earth is a solid sphere of radius R made of a

Last updated: 6/1/2023

5 Suppose earth is a solid sphere of radius R made of a material of density P There is a spherical cavity inside earth whose centre is at B Distance of centre B from the centre of earth A is a A particle is projected from point D with a velocity u towards the centre of the cavity with a velocity u and the particle strikes the surface of cavity at point C as shown in figure Then 1 U 2 G R 3 A C B 1 2 U G R 3