Recent content by Deej

You might have cracked it. If a large vehicle was to starts to move in the opposite direction - ie as to go back off the boat - it could shift the vessel away from the shore? Real life scenario was quite complex. A large lorry was pushing against a roll of rubber matting which was attached to...

I said the car rests gently against the door before starting to push :)

I don't. But we had similar situation, where the ship moved, and we're not sure why. My assumption is it was just a coincidence as there's a fair few other things going on - tide, wind, current, ship's engine is used to push on to the slip to prevent movement as vehicles move on to the ramp...

In this situation, the car is not in direct contact with the shore. It's on the ramp, (the ramp is attached to the ship and touching the shore.) (Also, assume the ferry is not tied to the shore for this example. And I don't think it matters for this example, but if it does, assume rear drive)

the door being pushed on it part of the ship and located at the top of the ramp - ie if open you drive up the ramp and through the door on to the deck

Not really. The position of the car on the ramp effects where the weight is and so how high the boat sits in the water, but the act of pushing against the door won't effect this much. And it shifting of weight/angle of ramp happens under normal circumstances - ie every time a car comes on/off -...

No but I'll get one. May take a while Note - I'd have assumed force on door equals force on ramp and the vessel doesn;t move but we had an analogous incident recently where the boat did move. Perhaps coincidentally due to something else of course...

If you push a floating object from land, the object should move away. If you push a floating object from the floating object, the force should be equal and opposite, and floating object won't move. What if you push a floating object from a ramp, where the ramp is connected to the floating...