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many pulleys at various angles multiply the initial power of the winch
How Do Pulleys Multiply Force in Complex Systems?
- Thread starter Ranger Mike
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AI Thread Summary
Pulleys can significantly multiply the initial power of a winch when arranged at various angles, enhancing lifting capabilities in complex systems. The "cat's cradle" technique is rarely utilized due to the scarcity of anchor points for snatch blocks, especially near highways. This method proves effective in challenging scenarios, such as recovering heavy vehicles that have sunk or rolled over in forested areas. The discussion humorously notes the ineffectiveness of using a bulldozer for extraction, highlighting safety concerns with tensioned cables. Overall, the conversation underscores the practical applications and limitations of pulley systems in recovery operations.
many pulleys at various angles multiply the initial power of the winch
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Baluncore
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The "cat's cradle" technique is very rarely seen due to the lack of anchor points for snatch blocks near highways. It really comes into its own when a heavy vehicle sinks, or rolls over, in a forest.Ranger Mike said:
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berkeman
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Wow, very impressive. I like how they said they tried pushing it out with a 'dozer and that did not work, and then later in the video you can see the back of the truck with big letters "DO NOT PUSH". LOL 
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DaveC426913
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Man, guys just blithely walking in and amongst those tensioned cables...
Anybody seen Ghost Ship?
Anybody seen Ghost Ship?
How did you find PF?: Via Google search
Hi,
I have a vessel I 3D printed to investigate single bubble rise. The vessel has a 4 mm gap separated by acrylic panels. This is essentially my viewing chamber where I can record the bubble motion. The vessel is open to atmosphere.
The bubble generation mechanism is composed of a syringe pump and glass capillary tube (Internal Diameter of 0.45 mm). I connect a 1/4” air line hose from the syringe to the capillary
The bubble is formed at the tip...
Here is a photo of a rough drawing of my apparatus that I have built many times and works.
I would like to have a formula to give me the RPM necessary for the gyroscope to balance itself on the two legs (screws). I asked Claude to give me a formula and it gave me the following:
Let me calculate the required RPM foreffective stabilization. I'll use the principles of gyroscopicprecession and the moment of inertia.
First, let's calculate the keyparameters:
1. Moment of inertia of...
Scenario 1 (figure 1)
A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material.
The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm).
At this level of stretch, the load cell reads 45N tensile force.
Key numbers...
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