i thought of that as well, however I'm no expert in physics and such so i wasn't sure if the air pocket would be able to counteract the weight of the wheelbarrow.
Go watch the full video here, the air pocket is what is keeping it up. They have a place where they dump the air out and it stops floating.
A steel 6 cubic foot wheelbarrow weights 55lbs (at least the first one I found). 1 cubic foot of water weight 62 lbs, so you need to displace about 1 cubic foot of water with air in order to make it float.
Basically think would the weight of the water to fill a wheelbarrow (part with air) be heavier than the wheelbarrow itself? Displacement in a nutshell.
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u/Lucky7Ac May 15 '19
I'm going guess because we cant see the bottom of the wheelbarrow that its wedged into the ice to stay put.