Question

A silver cube (density of silver is 10 g/cm3) with side length of 3 cm weighs more than an aluminium cube (density of aluminium is 2.96 g/cm3) with side length of 4 cm. The cubes are each suspended by a string and allowed to be completely immersed in two identical jars containing the same amount of water (see figure below). If the strings of both objects were cut and they sink to the bottom of the containers, which weighing scale will show a bigger reading now?

Answer 1

Silver:
V = L*W*h = 3*3*3 = 3^3 = 27 cm^3
Wt. = V*D = 27cm^3 * 10g/cm^3=270 grams

Aluminum:
V = 4*4*4 = 64 cm^3
Wt. = 64cm^3 * 2.96g/cm^3 = 189.4 grams

Answer 2

A silver cube (density of silver is 10 g/cm3) with side length of 3 cm weighs more than an aluminium cube (density of aluminium is 2.96 g/cm3) with side length of 4 cm.The cubes are each suspended by a string and allowed to be completely immersed in two identical jars containing the same amount of water (see figure below). 1）If the strings of both objects were cut and they sink to the bottom of the containers,which weighing scale will show a bigger reading now?