September 2nd, 2009, 02:57 PM  #1 
Newbie Joined: Sep 2009 Posts: 22 Thanks: 0  Geometry or weights?
Two parallel shelves, each exactly 138 cm long, have exactly 32 cm of space between them. A circular hoop is placed between the shelves. The hoop's crosssection is a 2.5 cm square. The hoop barely touches the top shelf, and rests on the corners of the bottom shelf, as shown . If the hoop's density is 7.85 grams per cubic centimetre, what is the hoop's total mass?

September 2nd, 2009, 02:59 PM  #2 
Newbie Joined: Sep 2009 Posts: 22 Thanks: 0  Re: Geometry or weights?
i don't know if the image is showing or not but here is the link http://yfrog.com/6ccircleshelvesp 
September 2nd, 2009, 04:07 PM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,767 Thanks: 1017 Math Focus: Elementary mathematics and beyond  Re: Geometry or weights?
Here's a start: sagitta properties.


Tags 
geometry, weights 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Unequal Weights  mathmaniac  Physics  24  February 1st, 2013 04:09 PM 
the average molecular weights of polymers statistics  rayman  Advanced Statistics  3  September 18th, 2010 10:03 AM 
Find previous weights from current weights & percent change  billiboy  Applied Math  4  June 15th, 2009 11:26 PM 
keyword relativity datatype weights and algorithm  totus  Applied Math  4  February 28th, 2009 09:08 PM 
keyword relativity datatype weights and algorithm  totus  Real Analysis  0  December 31st, 1969 04:00 PM 