Mechanics - Surface of an accelerating fluid

1133

Sourish Ghosh ·2013-01-29 23:27:24

(B)

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1161

Akash Anand ·2013-01-30 03:26:51

It will be better if any one provide the solution as well.

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43

Jeet Sen Sharma ·2013-01-31 03:39:12

I think the ans is (C).

as the body is going up, effective upward acceleration is decreased by gsinÎ±. and the effective gravity is increased by gcosÎ±. hence d answer.

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Akash Anand Wrong logic..and answer is wrong as well..
Upvote·0· Reply ·2013-01-31 03:41:21
Jeet Sen Sharma sir, but d numerator hav to be a-gsinÎ± ?
Upvote·0· Reply ·2013-01-31 04:16:18
Akash Anand NO, u are again thinking in wrong way, sit in the frame of liquid and then think (Alternative Method)
Upvote·0· Reply ·2013-02-01 01:13:49
Karan Bhuwalka sir, why dont we take pseudo force for g?
Upvote·0· Reply ·2013-02-02 05:25:37
Karan Bhuwalka and what balances netF on surface of the liquid
Upvote·0· Reply ·2013-02-02 06:17:07
Akash Anand Because we take pseudo forces for the net acceleration ...not for each and every forces acting on it.
Upvote·0· Reply ·2013-02-02 22:50:14
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1057

Ketan Chandak ·2013-02-02 07:50:43

since it is an objective question i would put Î¸=0,the answer should come tan^-1(a/g)and putting a=0,angle should be Î± itself...

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Akash Anand Nice one..but i think this kind of tips will be helpful for class 12.
Upvote·0· Reply ·2013-02-02 22:49:07
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23

Anuradha Yadav ·2013-02-04 09:37:50

By balancing the forces we get 2 eqns as
a/sinÎ¸=gcosÎ±â†’(i)and
a/cosÎ¸=a+gsinÎ±â†’(ii)
dividing eqn(ii)by(i)the ans is coming as [B].IS IT CORRECT SIR?

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Akash Anand Yeah B is the right answer.
Upvote·0· Reply ·2013-02-05 00:26:43
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