A solid object (density ) is fully submerged in water and attached to a spring scale

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

Problem

5.0\,\text{kg}

solid object (density

2.5\times10^{3}\,\text{kg}\,\text{m}^{-3}

) is fully submerged in water and attached to a spring scale. While the object is being lifted straight upward, the scale reads

40\,\text{N}

. What is the magnitude of the object’s upward acceleration at that instant? (a)

1.8\,\text{m}\,\text{s}^{-2}

(b)

5.7\,\text{m}\,\text{s}^{-2}

(c)

2.1\,\text{m}\,\text{s}^{-2}

(d)

8.0\,\text{m}\,\text{s}^{-2}