Final answer:
The use of a length of pipe over a wrench handle increases torque by extending the distance from the nut, leveraging the radius component of torque calculation. This practice, related to engineering, helps loosen tight bolts but can be hazardous.
Step-by-step explanation:
The question relates to the application of torque and mechanical advantage when using a wrench tool, which falls under the category of Engineering. Mechanics sometimes extend the handle of a wrench with a length of pipe to increase the torque applied to a tight bolt or nut. This method works because torque is the product of the applied force and the distance from the point of application to the pivot point (the center of the nut or bolt). By adding a pipe to the wrench, you are effectively increasing the handle length and thus the distance (radius R), which significantly boosts the torque for the same force applied. However, this increased torque can be hazardous as it may break the bolt if excessive force is applied. The desirable mechanics is similar to the use of socket wrenches or a power drill, both of which offer options to apply significant torque with ease and more control.
A wrench provides grip and mechanical advantage in applying torque to turn a nut. When trying to remove a very tight bolt, mechanics sometimes put a length of pipe over the handle of a wrench to increase the applied force. This helps because the longer handle provides more leverage, allowing the mechanic to generate more torque. However, using too much force can be hazardous and can potentially break the bolt.