A cylindrical wooden log of radius and length has a density of

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

Problem

A cylindrical wooden log of radius

10\,\text{cm}

and length

1.0\,\text{m}

has a density of

600\,\text{kg\,m}^{-3}

. How much additional mass can be placed on the log so that it just begins to sink when floated in fresh water

(1000\,\text{kg\,m}^{-3})

? (a)

18.8\,\text{kg}

(b)

12.6\,\text{kg}

(c)

31.4\,\text{kg}

(d)

7.5\,\text{kg}