A solid sphere with density is held fully submerged in oil of density inside an…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids

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