Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 13 - Think and Solve: 41


2 N. Yes, he could do it.

Work Step by Step

Find the pressure. $$Pressure = (weight \;density)\times(depth)$$ $$= 10000 \frac{N}{m^{3}} \times (2 m) = 20000 \frac{N}{m^{2}}$$ Now find the force by multiplying pressure by the area. Remember that $1 cm^{2} = 10^{-4} m^{2}$. $$F = 20000 \frac{N}{m^{2}} \times (10^{-4} m^{2}) = 2 N$$ This is a small force.
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