Finding the tension in a string

  • Thread starter hansel13
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  • #1
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Homework Statement


Two blocks weighing 250 N and 350 N are connected by a string that passes over a massless pulley. What is the tension in the string?


Homework Equations


T= (2*m1*m2)/(m1+m2)*9.8m/s2


The Attempt at a Solution


m1 = 250/9.8 = 25.5
m2 = 350/9.8 = 35.7

T = (2*25.5*35.7)/(25.5+35.7)*9.8 = 291 N

Doesn't seem right. Can someone tell me what I did wrong?
 

Answers and Replies

  • #2
Redbelly98
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It looks right to me. The tension is somewhere in between the two weights, as it should be.

Just watch the sig figs, if your teacher (hopefully) cares about that.
 
  • #3
51
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Alright, well the answer is 290 so I probably just rounded off too much (like you said).

I was just wondering if I used the right formula but it seems that I did.

Thanks
 

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