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# A Physics Question

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If I hit a swinging $${\mathtt{10}}$$ pound bag of sand $${\mathtt{37}}$$ inches in $${\frac{{\mathtt{1}}}{{\mathtt{3}}}}$$ of a second, what force did I apply to that swinging $${\mathtt{10}}$$ pound bag of sand?  Show how to get to the answer.

physics
Mar 29, 2015

#3
+95361
+5

Yes, very cute Nauseated.   (ノ◒▽◒)ノ

I knew the units would not be the standard ones but I didn't think it would matter.

I think i have worked out what you were talking about.

it was just a trivial copy error that left the answer with the wrong units.

I am sure Nauseated could have fixed it but he is too busy in Wonderland.

He has to keep his like-minded friend - the hatter, company.

Half joking Nauseated.

We all have to get our priorities right. :)

Anyway maybe my answer is fixed now.     |ʘ‿ʘ)╯

Mar 29, 2015

#1
+95361
+5

Hi Gibson,

You probably already know that I am not a physics person but I will give it a shot :)

I have not taken the swinging bit into any consideration.  I don't think that you can because you do not know what its 'radius' is.

F=ma                 m=10   pounds

s=37 inches,  t=1/3 sec,   u=0,  v=?     a=?      But I need to find a

So if I am to use physics formulas then it could have s,t,u and a   BUT not v

$${\mathtt{S}} = {\mathtt{ut}}{\mathtt{\,\small\textbf+\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,\times\,}}{{\mathtt{at}}}^{{\mathtt{2}}}$$

$$\\37=0t+\frac{1}{2}a\left(\frac{1}{3}\right)^2\\\\ 37=\frac{1}{2}*a*\frac{1}{9}\\\\ 37*2*9=a\\\\ a=666\;inches/s^2\\\\\\ F=ma\\\\ F=10*666\\\\ F=6660\;pounds\;inches/s^2\\\\ F=6660/12\;pounds\;feet/s^2\\\\ F=555\;pounds\;feet/s^2\\\\$$

NOTE: A small error has been fixed.   Maybe it is right now.

Mar 29, 2015
#2
+1036
+5

## Has anyone noticed odd changes -- like space-time distortions where yesterday is tomorrow, and the universe seems a little more salty?

Maybe it’s just me :)

Mar 29, 2015
#3
+95361
+5

Yes, very cute Nauseated.   (ノ◒▽◒)ノ

I knew the units would not be the standard ones but I didn't think it would matter.

I think i have worked out what you were talking about.

it was just a trivial copy error that left the answer with the wrong units.

I am sure Nauseated could have fixed it but he is too busy in Wonderland.

He has to keep his like-minded friend - the hatter, company.

Half joking Nauseated.

We all have to get our priorities right. :)

Anyway maybe my answer is fixed now.     |ʘ‿ʘ)╯

Melody Mar 29, 2015