Energy stored in a cable? (A Level CW)

  • Thread starter Thread starter pipjordan
  • Start date Start date
  • Tags Tags
    Cable Energy
AI Thread Summary
The energy stored in a steel cable used for towing gliders is minimal due to its limited stretch, which is intentional to ensure safety. The discussion highlights that a low energy storage is preferable to prevent dangerous situations when the cable breaks or is released. An equation related to energy storage in springs is mentioned, but the focus remains on the practical implications of energy retention in cables. The safety concerns of high energy storage in towing scenarios are emphasized. Overall, the design of towing cables prioritizes safety by minimizing energy storage.
pipjordan
Messages
2
Reaction score
0
Energy stored in a cable?? (A Level CW)

Why is the energy stored in a steel cable used for towing gliders so small? And is there an equation that could show this?
 
Physics news on Phys.org


It's the energy store in a spring.
The cable doesn't stretch very much - that's deliberate so that there isn't much energy stored.
 


pipjordan said:
Why is the energy stored in a steel cable used for towing gliders so small? And is there an equation that could show this?

What are your thoughts? We do not do your homework for you here on the PF.
 


pipjordan said:
Why is the energy stored in a steel cable used for towing gliders so small?
Well, I can think of a good reason why the two pilots would not want a lot of energy stored in that cable...
 


Think of what happens when that cable does break.
 


RoyalCat said:
Think of what happens when that cable does break.
..or is simply released, as per routine.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top