Question

A shot put is a metallic sphere of radius 4.9 CM if the density of the metal is 7.8 gram per centimetre find the mass off the shot put

Answer 1

since shot put is a solid sphere made up of metal is mass is equal to the product of its volume and density we need to find the volume of the sphere

volume of sphere=4/3π^3

=4/3*22/7*4.9*4.9*4.9

=493cm(nearly)

further the mass of 1 cm cube of the metal is 7.8 gram therefore the mass of shot put =7.8*493

=3845.44g

=3.85kg (nearly)

hope it is helpful