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I was out driving the other day and I saw a fairly common thing: A vehicle towing another and it made me think about something. For you towing gurus out there, does a vehicle work harder towing a load versus pushing it? Same weight, just different application of force. I'm very curious.
As far as energy involved, it's the same--basic physics. Either way, the same weight is moving the same direction, and requires the same amount of force.
One thing to think about..I dont know if it's true, or not, but I heard it in one of the many lift truck classes I took. They had mentioned that if one got stuck (you may laugh at that thought, but I saw it happen in a vineyard..Dont try to transport one by driving through the vineyard, drive around on the road) do not try to push it with a vehicle, as you could bend your frame, depending on how stuck the lift is.
I took this class, of course, AFTER trying to push that lift out with my '66 F-100. Didnt bend a frame, though. Worst I did was ruin a tire by spinning it on a sharp rock.
Anyhow. I know whatever youre having to push would have to be heavy to bend a frame, but maybe keep it in mind.
You'd be surprised how much those forklifts weigh. Our small stand-up electric one at work weighs 7000 lbs. The battery alone weighs 2000 lbs! These things have to be HEAVY to hold up a load out on the forks.
As for the pushing or pulling, the main difference would be the tongue weight on the rear axle when hooked up to a trailer, versus just pushing on something from behind it. The extra weight makes more traction for the drive tires. Steering when pushing a car, for example, involves alot of sliding around on eachother's bumpers and is much harder than pulling the same car on a chain. Thinking strictly physics, it's just like Mikebon said. Add in the real-world effect and everything changes...
you would be all over the road trying ot keep the load in front of you.
i would think pushing the load would creat more traction your truck, you are pushing against the load and it in turn is pushing down.
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