An aluminum cube of mass and volume is released from rest while completely submerged…

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

An aluminum cube of mass

0.80\,\text{kg}

and volume

1.0\times10^{-3}\,\text{m}^3

is released from rest while completely submerged in freshwater (

\rho=1000\,\text{kg\,m}^{-3}

). Neglect any drag forces. Calculate the magnitude and direction (upward or downward) of its initial acceleration.