Posted by **Dillon** on Saturday, August 10, 2013 at 6:38pm.

I am new at physics and having a very hard time. Could you please help. Thank you.

Show that the water pressure at the bottom of the 50-m-high water tower in Figure 5.3 is 490,000 N/m2, or is approximately 500 kPa.

- Physics -
**Damon**, Saturday, August 10, 2013 at 6:51pm
One way:

How much does a column of water one meter square at the bottom and 50 m high weigh?

Density of water = 1000 Kg /m^3

Volume of column = 50*1 = 50 m^3

so

mass of the column = 50,000 Kg

weight = m g = 9.81 * 50,000 = 490,500 Newtons spread over one m^2 so

490,000 N/m^2

another way

pressure = rho g h

= 1000 * 9.81 * 50 = 490,500 N/m^2 again

since a Pascal is a Newton/meter^2 we have already answered the second part, about 500 * 10^3 Pascals

## Answer this Question

## Related Questions

- physics. PLEASE HELP - Where do I start? Calculate the water pressure at the ...
- Physics - Calculate the water pressure at the bottom of the 100-m-high water ...
- Physics - Help! Calculate the water pressure at the bottom of the 110--high ...
- Physics - Calculate the water pressure at the bottom of the 110--high water ...
- Physics - Pressure = weight density × depth Calculate the water pressure at the ...
- physics - Calculate the water pressure at the bottom of the 50-m {\rm m}-high ...
- physics - I'm having a really hard time with this physics problem...not really ...
- Physics - Bernouli - Water flows with constant speed through a garden hose that...
- physics - Here is a demonstration Pascal used to show the importance of a fluid'...
- Physics - A./_\ B.\_/ C.|_| The three tanks shown above are filled with water to...

More Related Questions