Final answer:
The two axles on a standard tandem trailer are best described as dead axles, which support the weight of the trailer without driving it. Drive axles, steer axles, and lift axles serve different functions in a vehicle.
Step-by-step explanation:
The two axles on a standard tandem trailer are best described as dead axles. A dead axle is one that is not connected to the engine and does not drive the vehicle. Instead, it supports part of the weight of the trailer and its cargo.
This is in contrast to drive axles, which are powered by the engine to propel the vehicle, steer axles, which are responsible for steering, and lift axles, which can be raised off the ground to decrease wear or to comply with axle weight regulations.
In addressing the statements provided:
The wheel on a wheelbarrow serves as the fulcrum for lifting and moving the load, not the center of the axle.
For the distribution of weight in cars, the location of the center of gravity plays a crucial role in stability and handling. The center of gravity is the average location of the weight of the vehicle and affects how weight is distributed among the axles.