Please show all steps and explianation

No$.3-$ Cantilever Beam

A cantilevered structural member has a large mass of $240$ kg at the right$-$hand end. The beam is made of aluminum with modulus of elasticity of $70$ GPa $,$ a mass density of $2700k\frac{g}{m^3}$and Poisson's ratio of $0\mathrm{.}33.$ Given that its cross section is square with a dimension of $100$ mm $,$ its length is L$=1\mathrm{.}0$ m$.$

A$)$ Use Strength of Materials principles to determine a general formula for the deflection, $$ at the right$-$hand end $(x=L).($you can look up the formula in a strength of materials text or online$).$

B$)$ Using the formula for the end deflection in A$)$ to determine an equation for the effective stiffness $(K_{\text{e}\text{f}\text{f}})$ of this system by writing the equation in the form $F=K_{\text{e}\text{f}\text{f}}^{**}.$

C$)$ Determine the deflection at the end of the beam due to the mass M$.$ Would you consider this large or small?

D$)$ Compute the ratio of the mass, $M,$ to the mass of the beam.