Why does something heavy dropping into a container sometimes make the container jump upwards?

Question

I saw a TikTok of the contents of a huge can of refried beans all entering into a pot below the can at once, which caused the pot to jump upwards about half an inch. Why is that?

In: 1

Answer 1

The object being dropped has downward momentum that momentum is transferred to the container, the container then applies that force to the surface where it was resting and “bounces” off the surface.