How do I solve this physics exercise (Equilibrium)?

AI Thread Summary
The discussion revolves around solving a physics exercise related to equilibrium involving cable tensions. The participant calculates that the 500-pound vertical load is supported entirely by cable CD, with 375 pounds distributed horizontally to the other two cables. Each of these cables, being symmetric, carries 187.5 pounds horizontally. Another participant confirms the calculations, arriving at a slightly different value of 197.64 pounds, suggesting minor discrepancies may be due to rounding. The consensus indicates that the original approach is largely correct, with only minor adjustments needed for precision.
Tapias5000
Messages
46
Reaction score
10
Homework Statement
Determine the force required on each cable to sustain the load of 500lb
Relevant Equations
Σfx=0, Σfy=0, Σfz=0
1632608403797.png

I tried to solve it and I got the following, is it correct?
aa.png
 
Physics news on Phys.org
Looks ok.

Insofar as 2 of the cables are in the horizontal plane, then the 500 pound vertical load must all be carried by the vertical comp of cable CD. And with that 3-4-5 triangle, 3 fourths of it or 375 pounds , must go horizontally to the other 2 cables, and their being symmetric, that’s half again or 187.5 borizontally to each, or cable tension root 10/3 times that. Saves a few lines. At least on this one.
 
PhanthomJay said:
Looks ok.

Insofar as 2 of the cables are in the horizontal plane, then the 500 pound vertical load must all be carried by the vertical comp of cable CD. And with that 3-4-5 triangle, 3 fourths of it or 375 pounds , must go horizontally to the other 2 cables, and their being symmetric, that’s half again or 187.5 borizontally to each, or cable tension root 10/3 times that. Saves a few lines. At least on this one.
Are my answers correct?
 
Tapias5000 said:
Are my answers correct?
Near enough. I get 197.64...
 
haruspex said:
Near enough. I get 197.64...
ooh... maybe then only decimals are involved in the procedure... well I'll settle for that
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Back
Top