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September 2, 2014

September 2, 2014

Posted by **ALan** on Monday, March 8, 2010 at 7:01pm.

Help please, I am currently manipulating formulas, but this seems extremely complicated, can someone show me the process to which they got the answer and I will compare it with my way. Thanks.

- Physics Tough question! -
**drwls**, Monday, March 8, 2010 at 7:16pmYou need to solve two simultaneous equations for R1 and R2.

The first is the geometrical relation:

R2 = R1 + 5/tan 60 = R1 + 2.89 m

The second is the physics relation:

pi*R2^2 * Po =

pi*R1^2 (Po + rho*g*depth)

Po = atmospheric pressure = 1.01*10^5 Pa

rho*g*depth = 0.49*10^5 Pa

R2^2/R1^2 = 1.50/1.01 = 1.49

R2/R1 = 1.22

Take it from there.

- Physics Tough question! -
**ALan**, Monday, March 8, 2010 at 9:37pmo wow, i didnt even think of the geometrical way, thanks.

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