Spring scale w/ Different Forces

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SUMMARY

The discussion centers on the behavior of a spring scale under different forces and the pressure dynamics in a pipe system. When a spring scale is subjected to 50 pounds of force on one side and 40 pounds on the other, it will read 50 pounds, reflecting the greater force applied. In the case of a pipe with a supply pressure of 50 psi and a return pressure of 40 psi, the pressure on the sidewall of the pipe will be influenced by the higher supply pressure, which is critical for understanding fluid dynamics in plumbing applications.

PREREQUISITES
  • Understanding of basic physics principles, specifically force and tension.
  • Knowledge of pressure dynamics in fluid systems.
  • Familiarity with spring scales and their operational mechanics.
  • Basic plumbing concepts related to pressure measurements.
NEXT STEPS
  • Research the mechanics of spring scales and their calibration methods.
  • Study fluid dynamics principles, focusing on pressure differentials in pipes.
  • Explore the effects of tension in ropes and cables under varying forces.
  • Learn about plumbing systems and pressure measurement tools, such as manometers.
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Engineers, plumbers, physics students, and anyone interested in understanding the principles of force and pressure in practical applications.

torq123
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I have two questions that I think are analogous (tell me if they are not).

1. If I have a spring scale and apply 50 pounds of force to one side and 40 pounds to the other, what would it read and why? (I think it will read 45 pounds because that is what the tension would be if it were a rope).

2. If I have a pipe with a supply pressure of 50psi and a return pressure of 40psi, what is the pressure on the sidewall of the pipe.

These are not homework questions--I was doing some plumbing recently in the lab and it got me thinking...
 
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I think the tension in the rope is 90 lb, and same for the spring scale.
 
UltrafastPED said:
I think the tension in the rope is 90 lb, and same for the spring scale.
What if you pulled both ends with 50 lbs of force?
 

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