Physics

Problem

0.50\,\text{kg}

solid sphere with density

800\,\text{kg/m}^3

is held fully submerged in oil of density

900\,\text{kg/m}^3

inside an elevator that accelerates downward at

2.0\,\text{m/s}^2

. When the sphere is released, what is the magnitude and direction of the net force acting on it at that instant? a)

0.49\,\text{N}

upward b)

0.51\,\text{N}

downward c)

0\,\text{N}

(forces balance exactly) d)

0.61\,\text{N}

upward