Suppose you try to loosen a hex nut with a wrench and it does not give at all. To increase the chance of success, you should: extend the lever arm.
The hexagonal nut is a type with six sides since it is the easiest shape to grasp. But, if we fail to loosen the hex nut, we can extend the lever arm since it increases force capability. When we increase the length of the lever arm, the torque will also increase. Hence, less force is required to loosen the nut.
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