A solid plastic cube of side 0.2m is submerged in a liquid density of 0.8kgm−³. Calculate the upthrust of the liquid on the cube (g=10ms−²)

A. 0.064N
B. 0.025N
C. 0.016N
D. 0.008N
E. 0.003N

Correct Answer:

Option A – 0.064N

Explanation

Upthrust = Volume of fluid displaced =vpg =0.2 x 0.2 x 0.2 x0.8 x 10= 0.064N