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![[Post New]](/templates/default/images/icon_minipost_new.gif) 30 Jan 2007 19:10:53 IST
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i face a lot of problems in questions of constrained motion kindly please help me out in solving these questions with the help of an example
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30 Jan 2007 19:20:28 IST
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even i hav the same prblem especially those with a wedge.
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30 Jan 2007 19:38:12 IST
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Post a problem so that we can help
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30 Jan 2007 21:13:23 IST
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usually in such probs the no.of constraint eqns= no of strings in the system. consider a simple pulley system with masses m1 & m2 take the centre of pulley as reference. take x1 & x2 as the lengths of the strings connecting the masses..then as x1 + x2=constant differntiate wrt to time v1+v2=0 and a1+a2 =0 OKAY thats the way.... TELL ME WHICH PROB (MAY BE FROM HC VERMA) IS GOOD ....lemme crack it
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CHEERS |
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8 Feb 2007 13:12:13 IST
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Well Nishant, you must understand that this forum is for answering only one question in a post. And a problem on any topic can vary from very simple to very complex. So you should always ask a poblem depending on your own level of understanding instead of giving a specific topic.
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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9 Feb 2007 14:01:43 IST
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ok Guyz i'd give a good question for you In the pulley system shown in the figure A,B,C are of mass 1kg each.D,E are fixed pulleys.The strings are light and inextensible. Find the tension in the string.Also find the accelerations of the pulleys A,B,C.
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Talk less work more!! {To be simplistic and gain respect}
Eat less work more!!! {To "build" ur body}
Work less Do more!!! {2 make ur life big}
        
don't get scared !!!
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9 Feb 2007 21:00:53 IST
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I'm not getting the answer
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Think Positive!!!! |
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10 Feb 2007 09:20:59 IST
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tension will be same in all the string parts as it forms a common string, then write down force equations !!
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10 Feb 2007 10:29:44 IST
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The answer I have got is
T=(2g/3) newtons
accelerations of,
A=B=g/3 downwards
C=g/3 upwards
Solution:
let accelerations of A,B,C be a1,a2,a3 respectively<all assumed to be downward>,
The constraint equation involved is a1+a2+2a3 =0
The force equations for A,B,C respectively are
A: T=a1 + g
B: T=a2 + g
C: 2T=a3 + g
that solves the problem!
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Destiny is what you make
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10 Feb 2007 11:04:08 IST
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amaron , Would u explain ur method of solving? I ask so 'coz many people do in many different ways the answers are correect
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Talk less work more!! {To be simplistic and gain respect}
Eat less work more!!! {To "build" ur body}
Work less Do more!!! {2 make ur life big}
don't get scared !!!
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10 Feb 2007 11:07:07 IST
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all possible methods are invited common guyz those who think different fromm others may send their different methods
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Talk less work more!! {To be simplistic and gain respect}
Eat less work more!!! {To "build" ur body}
Work less Do more!!! {2 make ur life big}
don't get scared !!!
|
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10 Feb 2007 11:22:42 IST
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u can use the virtual work method, that will be real easy!!
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Manasi....
NIT-Allahabad...
............................................................
Challenges are High, Dreams r New..
The World out thr is waiting for U !!
Dare to dream, Dare to Try..
No Goal is distant, no Star is too high !!! |
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10 Feb 2007 11:32:40 IST
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hey magiclko i knew the ordinary method i want some different methods
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Talk less work more!! {To be simplistic and gain respect}
Eat less work more!!! {To "build" ur body}
Work less Do more!!! {2 make ur life big}
don't get scared !!!
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10 Feb 2007 20:49:17 IST
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anyone
??????????????
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Moderation Team
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