A cylindrical rod consists of a solid lead core of radius surrounded by a coaxial…

PHYSICS · Subjective · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids

Problem

A cylindrical rod consists of a solid lead core of radius

0.80\,\text{cm}

surrounded by a coaxial aluminum shell so that the overall radius of the rod is

1.20\,\text{cm}

; the lead and aluminum sections are the same length. Given densities of

11.3\,\text{g}/\text{cm}^3

for lead and

2.70\,\text{g}/\text{cm}^3

for aluminum, determine the fraction of the rod’s total mass that is aluminum.