One year we saw this happening in lab, which had some of us worried about safety and some of us thinking "oh, cool, a physics problem!" It might help with the idea of "footprint." Here's what was happening: A group of students placed a heavy metal brick on its end at the edge of a table. Its dimensions were about 20 cm x 10 cm x 5 cm, and its mass about 10 kg. The safety part was the chance of it toppling off onto someone's foot. And the physics question: What would it take for that to happen? I'm thinking that the brick toppling would mean its rotating up onto a corner, until the center of mass is no longer over the base. a) So, first, find the smallest magnitude of force it would take to make the brick start to rotate, if it's standing up on its end. b) And then find the energy it would take, in joules, for the brick to rotate so much that it falls. c) Same questions but this time put the brick on its long thin side like this