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Article #322Re: Semester 1 Physics
From: Gulvin
Date: Sat, 04 Mar 1995 21:12
Date: Sat, 04 Mar 1995 21:12
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1202 bytes
You can treat the system this way: You have the two forces acting in opposite directions, and find the total. The 12 kg mass has a force of 12g, and the other has a force of 4g, for a total of 8g pulling in the direction of the 12 kg mass. The system as a whole has a mass of 16 kg, and F=ma, so the accel is 12(9.8)/16. So now you have the distance and accel, so you can find the velocity by the formula Vf^2=Vo^2 + 2ad. (I think...check the formula) You should come up with 6.64 m/s.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f4cf3,9cd0fc7033c0257f,start X-Google-Attributes: gidf4cf3,public X-Google-ArrivalTime: 1995-03-05 01:22:02 PST Path: arc1-ca.pugleaf.net!bga.com!news.sprintlink.net!howland.reston.ans.net!swiss.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: gulvin@aol.com (Gulvin) Newsgroups: cu.physics.ugrads Subject: Re: Semester 1 Physics Date: 4 Mar 1995 16:12:05 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 7 Sender: root@newsbf02.news.aol.com Message-ID: <3jal35$61p@newsbf02.news.aol.com> References: <3i8tu8$c5d@newsbf02.news.aol.com> Reply-To: gulvin@aol.com (Gulvin) NNTP-Posting-Host: newsbf02.mail.aol.com