# Hydrostatics help

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#1
https://media.discordapp.net/attachm...4735_Drive.jpg

https://media.discordapp.net/attachm...497&height=663

I'm not sure if negatives answers are correct and I don't know how to get to the correct answer for the special chamber. Any tips?
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1 month ago
#2

I've never dealt with manometers before, but I'm just hedging a few bets...

where h is relative to the right side. If the column rises on the left instead of the right, then it's going to be a negative and hence the right side has a higher pressure. Anyhow...

Based on that, the gauge pressure of 5 kPa (hence the pressure of the balloon must be 1 ATM + 5 kPa) will yield a height of 0.63m ish.

The absolute pressure of 5 kPa will yield a of roughly 12m... ish (using 1e5 as the ATM- I know it's not exact but forgive me for forgetting...) which is what they want.

In your case, you used absolute pressure for the balloon, and you... well I don't know what you did for the special chamber...

EDIT
I didn't mention this but you should know that Gauge Pressure = WHAT IS MEASURED BY THE GAUGE (hence RELATIVE to ATMOSPHERIC PRESSURE)
Last edited by Callicious; 1 month ago
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#3
(Original post by Callicious)

I've never dealt with manometers before, but I'm just hedging a few bets...

where h is relative to the right side. If the column rises on the left instead of the right, then it's going to be a negative and hence the right side has a higher pressure. Anyhow...

Based on that, the gauge pressure of 5 kPa (hence the pressure of the balloon must be 1 ATM + 5 kPa) will yield a height of 0.63m ish.

The absolute pressure of 5 kPa will yield a of roughly 12m... ish (using 1e5 as the ATM- I know it's not exact but forgive me for forgetting...) which is what they want.

In your case, you used absolute pressure for the balloon, and you... well I don't know what you did for the special chamber...

EDIT
I didn't mention this but you should know that Gauge Pressure = WHAT IS MEASURED BY THE GAUGE (hence RELATIVE to ATMOSPHERIC PRESSURE)
Sorry for the late response and thank you.
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