Question

please solve it..!!!
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Answer 1

⭐⭐⭐Attractive force due to the sphere of density ρ=(R/2)2G(ρ34π(R/2)3)m=2mg(Since M=ρ34πR3)

Force due to sphere of density −ρ=−R2G(ρ34π(R/2)3)=8mg

Hence net force =2mg−8mg=83mg⭐⭐⭐

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