Although humans have been harnessing its power since rubbing two sticks together to build the first fire, the physics of friction remain largely in the dark. Now, Brandeis research is showing that ...

Force diagrams and resultant forces Learn about drawing and interpreting force diagrams. Find out how to calculate resultant forces acting on an object. Motion and speed Find out more about the ...

ETH Zurich scientists measure rolling friction in micrometer-sized particles, enhancing understanding of suspensions in ...

But the experiments revealed some basic physics of how fractures work — particularly how a buildup of friction at the ...