Finding the tension in a string

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SUMMARY

The discussion centers on calculating the tension in a string connecting two blocks weighing 250 N and 350 N over a massless pulley. The participant used the formula T = (2*m1*m2)/(m1+m2)*9.8 m/s², leading to a calculated tension of 291 N. However, after feedback regarding significant figures, the correct tension is confirmed to be approximately 290 N, indicating the importance of precision in calculations.

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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?
 
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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.
 
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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