Physics Help Forum number of beats

 Waves and Sound Waves and Sound Physics Help Forum

 Jul 19th 2009, 01:45 AM #1 Junior Member   Join Date: Oct 2008 Posts: 18 number of beats two strings of length 51.6 cm & 49.1 cm are tensioned separately by 20 N force. mass per unit length of both the string is same & equal to 1 g/m. when both the strings vibrate simultaneously the no. of beats is : 1. 7 2. 8 3. 3 4. 5
 Jul 19th 2009, 11:30 PM #2 Physics Team   Join Date: Feb 2009 Posts: 1,425 Please attempt the question and post your attempt, or specify where your difficulty lies. This appears to be a straighforward question.
 Sep 14th 2009, 10:28 PM #3 Junior Member   Join Date: Sep 2009 Posts: 8 Okay so E = 2(pi)^2 pSvf^2A^2 I = the average of P/S = 2(pi)^2vpf^2A^2 I got just S in the end x wave speed. I think this is really wrong. Help please.
 Sep 14th 2009, 10:55 PM #4 Physics Team   Join Date: Feb 2009 Posts: 1,425 radioheadfan, I cant see the connection of this post to the original question. Did you post in the wrong place?

 Tags beats, number