Manometer -- determine height from relative pressure

Thread starter daphnelee-mh
Start date Sep 28, 2021
Tags

Height Manometer Pressure Relative

Sep 28, 2021

daphnelee-mh

Homework Statement: A Burdon gauge is mounted on the top of the vessel at point M . The relative pressure at M is -980Pa, determine h1 if H=1.5m, h2=0.2m

Relevant Equations: Pm=Pa- Pmabs

The correct answer is 5.6m, not sure where I made the mistake.

Physics news on Phys.org

Sep 28, 2021

haruspex

Science Advisor

Homework Helper

Insights Author

Gold Member

2024 Award

##P_{M gauge}=P_{atm}-P_{M abs}##?
Doesn't look right to me.

Sep 28, 2021

Chestermiller

Staff Emeritus

Science Advisor

Homework Helper

Insights Author

2024 Award

I get ##P_{Mabs}=p_{atm}+P_M##

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...

View full post »

Thread 'Explain this asphalt sheen'

This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is The second part of the problem is exactly why you get this affect. And one more spoiler:

View full post »