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<blockquote data-quote="tzor" data-source="post: 2827091" data-attributes="member: 12826">I think there are too many variables you have to consider when thinking of a platform with wheels.&nbsp; &quot;Work&quot; becomes an impotant consideration.&nbsp; (Work is definied from a physics standpoint as moving things higher or lower.)&nbsp; Most of the effort involved in dragging things concern overcomming friction, while in the case of the wagon, you merely have to overcome inertia, and spend a small amount of effort overcomming the natural friction of the wheel/axle system.So as opposed to dragging an item where recduction of friction (via grease) is important, the question is the quality of the surface of the road on which the cart rests.&nbsp; An uneaven pavement with bumps and hills turns the problem into a &quot;work&quot; problem moving the heavy mass up those bumps.&nbsp; With a smooth surface and a well greased axle system the question becomes more of how much can the cart hold.&nbsp; Unfortunately the world isn't one long un-undulating smooth surface.&nbsp; But if you are only going through a potal, it becomes easier.</blockquote>

[QUOTE="tzor, post: 2827091, member: 12826"] I think there are too many variables you have to consider when thinking of a platform with wheels. "Work" becomes an impotant consideration. (Work is definied from a physics standpoint as moving things higher or lower.) Most of the effort involved in dragging things concern overcomming friction, while in the case of the wagon, you merely have to overcome inertia, and spend a small amount of effort overcomming the natural friction of the wheel/axle system. So as opposed to dragging an item where recduction of friction (via grease) is important, the question is the quality of the surface of the road on which the cart rests. An uneaven pavement with bumps and hills turns the problem into a "work" problem moving the heavy mass up those bumps. With a smooth surface and a well greased axle system the question becomes more of how much can the cart hold. Unfortunately the world isn't one long un-undulating smooth surface. But if you are only going through a potal, it becomes easier. [/QUOTE]

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