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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
gibsonj338  Mar 29, 2015

Best Answer 

 #3
avatar+91465 
+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
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3+0 Answers

 #1
avatar+91465 
+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.         

Melody  Mar 29, 2015
 #2
avatar+1037 
+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 :)

Nauseated  Mar 29, 2015
 #3
avatar+91465 
+5
Best Answer

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

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