Sand watch

Suppose you have a sandwatch which is not in running state an then you weighed it. Now you turned the sandwatch upside down and made it in running state and now again you weighed it. Will there be any difference in two weighs?

i think thr might be some minute change in weight because as there mass is same in running and stopped state but in running state there is difference in there potential difference

there will be a difference , due to force applied by the running mass.:)

m just asking dat in running state whether the weight will be more or less than in stop state?

I think there will be a difference between the mass of sandwatch owing to the different states (running and before running) it finds itself into.

As i think during running state weight should be more as earth gravity pulls every object towards it, with a force .

Well. I dont know why some of you are not able to think like I am thinking.May be I am wrong but this is what I think.
Since in running state some of the mass will be in air. So, The sand watch will weigh less.
Correct me if i m wrong.

[QUOTE=smart_coder;11546]Well. I dont know why some of you are not able to think like I am thinking.May be I am wrong but this is what I think.
Since in running state some of the mass will be in air. So, The sand watch will weigh less.
Correct me if i m wrong.[/QUOTE]

We all think like engineers.:D that's why we think differently. JOKING.

Actually you may be right, I also think that way also, but later it's look like a joke, then i think about earth gravity which pulls each object towards it with a force equal to gravitational force.
That's why I post that solution, which may also be right, Because we all are talking about theory but no one is doing the practical.:confused:

I will explain with a small example.
Suppose there is a box with pigeons in it. Now, if pigeon starts flying in the box, won't the box will weigh less?

no ,never.
It has been proved in physics.