Yes it will be rolling. The moving plates which are attached to each other acts like a floating piston. Actually the plates will always be stationary, the tank/container will move to displace water. I agree, the fig is wrong, the plates should be on the opposite ends from where they are right...
I would like to know if its possible to move water from a filled rectangular tank to another tank sliding down an incline using force generated due to the weight of the empty tank rolling down the slope.
Attached is a figure depicting the scenario.
I would like to know what should be the...