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## Homework Statement

Find: (a) volume of plank (b) bouyant force (c) density of plank

mass plank = 877kg

mass bricks loaded on plank = 2.3 * 74 = 170.2

plank if floating level with surface of lake

## Homework Equations

p = m/vol

v = l w h

Fb = pfluid x g x volume

## The Attempt at a Solution

How does one calculate volume without known dimensions (only mass is know). It can not be derrived from density equation because density of plank is not given (and it varies a great deal)