Question $1$

Granite rock is crushed with a uniform feed of $2$ in$-$spheres. The screen analysis is given in the table below. The power required to crush this material is $500kW$; of this $20kW$ is needed to operate the empty mill. The feed rate is at $150to\frac{n}{h}r.$ Calculate the power required for the second operation using:

a$)$ Rittinger's Law

b$)$ Kick's law

$\backslash$table$[[$Mesh$,x_1(\%),x_2(\%)$