How Do You Delete an Accidental Forum Post?

AI Thread Summary
To delete an accidental forum post, users can click on the "Edit" tab after posting, where the delete option is available. It's important to note that there is typically a time limit, often around 30 minutes, to edit or delete a post. New users may accidentally post prematurely, leading to confusion about how to manage their content. The community encourages users not to apologize for such mistakes, as they are common. Understanding these basic functions can enhance the user experience on forums.
chem_is_lovex
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how do you delete posts?

i was going to post a question and i accidentally posted it how do i delete this error?
 
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? :biggrin:
 
phyzmatix said:
? :biggrin:

uhhhh... yeahh sorry, my error. I'm only new to this and i by accidentally pressed enter when i was typing the title! then it posted it and i don't know how to delete it!

sorry =]
 
chem_is_lovex said:
uhhhh... yeahh sorry, my error. I'm only new to this and i by accidentally pressed enter when i was typing the title! then it posted it and i don't know how to delete it!

sorry =]

No need to apologise! :smile: Click on the "Edit" tab after you posted, the option to delete is somewhere there. Alternatively, you have up to, I think 30min, to edit a post.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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