*Specific Gravity

Question

A cylinder of plastic is 100 mm long and 50 mm in diameter. It has a mass of 1 kg. Determine its specific gravity and indicate whether it would float or sink in water .

PLLEEEEEEEEEEEASE

Answer 1

Density=mass/volume

mass=1 kg

volume=pi * radius^2 * length

100mm=0.1m and 50mm=0.05m

length=0.1m and radius=0.05/2

Plug in the values and solve for the volume of the cylinder, and then solve for density after calculating the volume. Your answer will have units of kg/m^3

Density of H2O=1kg/m^3

Plug in values and solve for the specific gravity

Specific gravity=density of cylinder/density of water

****Note: specific gravity is unitless.

Answer 2

Good