The Physics Olympiad is knocking at the door. So I think it is high time to start a Physics problem solving marathon.
I informed Moon vai, Emroz vai & others. But they were busy. But now moon vai is free. So I think Moon vai can help us.
There are some rules from me but if there anything to add then Moon vai or other Moderators will add them. Rules:-
1.Very simple.I'll start this Marathon with a physics problem. Next who can give the solution of the problem, will get a chance to post a new problem. Different solutions are welcome too. Who will give a different solution also can get a chance to post a new problem.
2.If you post the problem from any other Olympiads or books then you should mention the name of the source.
3.You can not post any contest's problem before expiring the deadline of the contest.
4.If anyone's solution is somewhat wrong, another person posts the correct solution and then solution for the second problem and hides it. Then he posts another problem.
5.We should mention the serial number of the problem or solution like "Problem-1","Problem-120" and "Solution-1","Solution-45"
6.No one should post reply without full solution.
7. It's essential to use LATEX.
8.If any problem contains with many different parts like a),b),c) then you can post any of them (if you can't solve others.)
9.You can use Bangla or English but can't use banglish and you should use only one language for one post.Don't mix Bangla and English
I hope everybody will enjoy it.
Last edited by sm.joty on Mon Jan 02, 2012 12:43 am, edited 1 time in total.
The first problem.
A very easy problem for all. Problem-01:-
A stone thrown from the top of a building is given an initial velocity of $20 ms^{-1}$ straight upward. The building is $50m$ high.The stone reach at the maximum height and then the stone falling freely.
Determine,
a)the maximum height ?
b)the time at which the stone returns to the height from which it was thrown ?
c)the time when the stone will reach at the ground ?
Source: Fundamentals of Physics by Halliday-Resnick.
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