There are several factors to be included when calculating weigh for truck loading ramps. The weight of the materials being loaded vary and also the weight of the machine that is used to transport the loads.
A pulley isn't a kind of simple machine, it is a simple machine
Loading dock is an Inclined Plane - simple machine.A loading dock as commonly called, also known as a loading bay, is a working area of a facility, warehouse, or other building where a trailer, truck, or other transport vehicle loads or unloads an item or product. Designed to process efficient interaction with range of vehicle types.
A train is not a simple machine.
IT's NOT A SIMPLE MACHINE!
its not a simple machine
It is a simple lever.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
a compound machine is a combination of simple machines
A common type of simple machine found at the back of a truck is a ramp. Ramps make it easier to load and unload heavy items by allowing them to be rolled or pushed up an incline rather than lifted directly. This reduces the amount of force required to move objects.
lever
lever