Predicting Gravity on Other Planets

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The discussion centers around a request for help with homework on predicting gravity on other planets. Participants firmly refuse to do the homework, emphasizing the importance of personal effort in learning. They suggest using the Law of Universal Gravitation and planetary dimensions as key resources for the assignment. Additionally, they offer to provide guidance if the requester shares their initial attempts. Ultimately, the consensus is that doing the homework for someone else is not beneficial for their education.
Newb
can u do my HW for me? please...

hi guys
whats up
i was just wondering if u could do my HW for me

Gather secondry information to predict the value of acceliration due to gravity on other planets.
(it has to be verry brief) thanks in advance
cheers :smile:
 
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Originally posted by Newb
hi guys
whats up
i was just wondering if u could do my HW for me

Gather secondry information to predict the value of acceliration due to gravity on other planets.
(it has to be verry brief) thanks in advance
cheers :smile:

No. We will not do your homework for you.
 
No, we won't do your homework for you.

I can give you a hint where to look, though.

Look up the Law of Universal Gravitation, and the dimensions of the planets. That is all the information you'll need.
 
Actually, the answer to your question is "Yes, we can do your homework for you".

But we WON'T because it wouldn't do you any good to have someone else do it for you. If you post what you have tried to do, we may give some suggestions.
 
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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