for example it’s easier to use a long breaker bar than a shorter cresent wrench on lugnuts.
I don’t understand the torque and *why* it’s easier and why distance has to do with it.
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Any type of leverage works as follows: imagine you have to put a bucket of water with 5kgs on a tablet but you can only lift 1kg with your muscles, so what you do is, lift 1kg 5 times and you have 5kg on the tablet. That’s how any leverage works, you trade, repetition, rotation, distance, and so on for work. At the end you will have the same amount of work done, or bit more due to inefficiencies. So when you are pedalling with a easy gear you are trading doing more work with more rotation to keep going. If you have strong muscles you can rotate less but put more effort in each stroke. At the end the sum will be the same. With a lever is the same. You will put less work by doing a wider movement on the handle for the lesser movement near the working point, so force is being added along the movement.
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