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## ถามโจทย์ปัญหา => ถามโจทย์ปัญหากลศาสตร์ => Topic started by: phys_pucca on July 01, 2005, 09:00:51 AM

 Title: CLASSICAL MECHANICS SECOND YEAR STUDENTS EPISODE III Post by: phys_pucca on July 01, 2005, 09:00:51 AM กระทู้สำหรับผู้ที่ไม่พอใจโจทย์ข้อที่มาตั้งเอาไว้ อาจเป็นเพราะยากหรือง่ายเกินไป   จะสามารถเอาโจทย์มา โพส เองและแสดงวิธีทำเองได้เลยครับ                                           >:A    PHYSICS NEVER DIE Title: Two sticks and a wall Post by: I am wathan on July 01, 2005, 04:16:21 PM (http://einstein.sc.mahidol.ac.th/~u4705180/mpec/03_12_e.JPG) Title: Re: CLASSICAL MECHANICS SECOND YEAR STUDENTS EPISODE III Post by: pattyphys on July 01, 2005, 04:34:55 PM Patty,  Here we go again.Under construction. Title: Re: CLASSICAL MECHANICS SECOND YEAR STUDENTS EPISODE III Post by: I am wathan on July 01, 2005, 06:08:40 PM Computer room is closed.  :(See again on Monday. Title: Re: CLASSICAL MECHANICS SECOND YEAR STUDENTS EPISODE III Post by: I am wathan on July 04, 2005, 10:42:39 AM Wait for figure!!!Consider the lower stick. Let the junction between two sticks be the fulcrum.We getConsider vertical forces on two sticks.Substitue . ThenConsider the upper stick. Let the junction between two sticks be the fulcrum (again).Substitue . Then :laugh: Typing is very fun. Title: Re: CLASSICAL MECHANICS SECOND YEAR STUDENTS EPISODE III Post by: I am wathan on July 04, 2005, 10:48:44 AM If , then So that, If , then So that,