Question

A rectangular block of dimension 10 m x 6m x 3m is lying on a horizontal surface with its smallest area in contact with the surface. if the work done in arranging it with its largest area in contact with the surface is 13.86 MJ, the density of the body is

• A. $2200gm/c.c$
• B. $2.2$ $kg/$m^3$
• C. $2.2gm/c.c$
• D. $1800$ kg/$m^3$

Answer 1

The correct option is B $2.2$ $kg/$m^3$

option b as 2*volume/area =work done

work done =force * displacement