Find the tension T of the two blocks. I think I'm doing something wrong

AI Thread Summary
The discussion revolves around calculating the tension T in a system of two blocks with different masses. Initially, the user incorrectly calculated the tensions, leading to confusion. After reevaluating, they correctly determined that T1 should equal the combined weight of both blocks, resulting in T1 = 49.05 N. T2 was calculated as the weight of the second block, yielding T2 = 29.43 N. The final verification confirms that the calculations align with the forces acting on the blocks, affirming the correctness of the approach.
riseofphoenix
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Find the tension T of the two blocks. I think I'm doing something wrong :(

ScreenShot2012-12-11at94641AM.png


T1 = m1g = (2)(9.81) = 19.62
T2final = T2 + T1 = m2g + m2g = (3)(9.81) + (2)(9.81) = 29.43 + 19.62 = 49.05

I did something wrong. :(
Help?
 
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Oh wait!
T1 = (m1 + m2)g
T1 = (2 + 3)(9.81)
T1 = (5)(9.81)
T1 = (5)(9.81)
T1 = 49.05

T2 = m2g
T2 = (3)(9.81)
T2 = 29.43

Is that right? Is the answer (d)?
 


That looks right.
T2 has to support 3kg, and T1 has to support 5kg.

You can also check this by looking at the forces on m1 :
T1 = m1g + T2
Your answers agree with this.
 

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