Pressure in Beaker

[Nellen2222]

Homework Statement

A 35 cm tall , 5 cm diamater cyldrical beaker is filled to its brim with water. whatis the donward force on the bottom of the beaker?

Homework Equations

p= po+ d*g*h
F= p*A
density of water is 1000

The Attempt at a Solution

p= 1.013*10^5 + 1000*9.8*0.35
p = 104,730 Pa

F= 104730 Pa * pi(0.025)^2 = 205.636 N

Answer sheet says 210 newtons, and there are two sig digs in the question given. Either I did it wrong or Im supposed to round up. Let me know what is wrong please!!

 

[Nellen2222]

Bump, anyone?

 

[Doc Al]

Answer sheet says 210 newtons, and there are two sig digs in the question given. Either I did it wrong or Im supposed to round up. Let me know what is wrong please!!

Looks OK to me. Round it up to two significant figures.

(And don't be bumping after just 30 minutes!)

 

[LawrenceC]

Bumping is against the forum rules.

It's due to roundoff. The net force on the bottom is onlly d*g*h.