A solid sphere of diameter 0.3m has mass 20 kg . its moment of inertia

1.	A solid sphere of diameter 0.3m has mass 20 kg . its moment of inertia about its axis is
Answer» $\huge\underline{\underline{\bf \orange{Question-}}}$ A solid sphere of DIAMETER 0.3m has mass 20 kg . its moment of INERTIA about its axis is $\huge\underline{\underline{\bf \orange{Solution-}}}$ $\large\underline{\underline{\sf <klux>GIVEN</klux>:}}$ Diameter of solid sphere (d) = 0.3m THEREFORE, its radius (r) = 0.15m Mass (m) = 20Kg $\large\underline{\underline{\sf To\:Find:}}$ Moment of Interia of solid Sphere. Moment of inertia of solid sphere is given by ➝ ✪ $\large{\boxed{\bf \blue{I = \dfrac{2}{5}MR^2}}}$ $\implies{\sf \dfrac{2}{5}×20×(0.15)^2 }$ $\implies{\sf \dfrac{0.9}{5} }$ $\implies{\bf \red{Inertia (I)=0.18Kg-m^2} }$ $\huge\underline{\underline{\bf \orange{Answer-}}}$ Moment of inertia about its axis is ${\bf \red{0.18Kg-m^2}}$ .