Calculating mechanical advantage in Pulley Systems

Want to know how to calculate mechanical advantage in rope systems? Here I will show you the T-method of counting tensions in your pulley systems.

[@fern9234]

This is by far the best explanation I've heard so far. Thank you so much

[@perryfire3006]

My goal was to make it understandable for everyone. Thanks so much.

[@fern9234]

@@perryfire3006 I had my crew watching it while on shift last night. Some of them are taking a ropes class this coming week and wanted to get a head start with the theoretical stuff.

[@perryfire3006]

@@fern9234 Excellent. If they are going for their Rope Rescue Tech then you may want to check out some of my other videos such as conversions and knot passes. And knots of course.

[@willpkay]

This is great, please could you do a 7:1? I can't find a video anywhere!

[@perryfire3006]

Sure. Just give me some time as I am currently quite busy.

[@phyrakkun7768]

This here I can understand.

[@perryfire3006]

That was my goal. Thanks for watching.

[@frnkjones40]

I don't understand why it's necessary to put 2 t's on the same side of the rope on the input and output sides

[@perryfire3006]

Around the pulley? If so, it's because the tensions have to equalize each other.

[@frnkjones40]

@@perryfire3006 What's the difference in the it two T's? You start with a T from where the load is being pulled. Then further up you put a second T that's on the same side......why?

[@perryfire3006]

@@frnkjones40 Think of the input as only 1T that has to continue until it terminates. That never goes away but along the way this 1T compounds itself through the pulleys which you have to add together to get the final result. Each time the rope goes around a pulley, the input of that 1T has to be countered with another 1T on the opposite side which creates an equilibrium of forces on that pulley. Thus you get a final force of 2T that the pulley creates. The rope grab is another force multiplier which can increase this input force but remember that the input force has to equal the output force. Hopefully too you can visualize how much force is being applied to your anchor in these configurations. Sometimes we focus so much on the final output that we don't consider what our system is doing to whatever is holding our MA system.

[@Badbehavior]

IF your into physics and math, great, IF your here to learn how to use rope/pulley's GO ELSEWHERE, to much technical mumbling to stay tuned in

[@perryfire3006]

Try some of my other videos. You might be surprised. Cheers

[@SooperToober]

I’m tee’d off too - will give you a second chance with your other video

[@perryfire3006]

@@SooperToober Not quite sure why explaining the physics behind MA would upset anyone but don't be mad😀, I've got 70 plus other videos that show hands-on skills including a whole playlist of setting up mechanical advantage systems. kzbin.info/www/bejne/gGnWm6mQiseShdE. Cheers

[@jorgesantabarbara]

*didn’t

[@jorgesantabarbara]

Unfortunately for those who have no clue, this don’t help fyi

[@perryfire3006]

I was hoping the included photos would help but you have to have at least a basic understanding of what constitutes a MA in pulleys and rope. Do a little research and then come back to my video and see what happens.