Electrically tunable ionic hydrogels use small voltages to switch friction at metal contacts between high-friction and ...

I'll be honest—friction is pretty complicated. Imagine that I have a block of wood sliding on a table. In some way, the atoms on the surface of the wood block are interacting with the surface atoms on ...

As you wouldexpect, there are several areas within an engine where frictional losses are created, at the very minimum. Also consistent with conventional wisdom is the fact they are unavoidable and can ...

In today's episode, Shini tells us about Static and Kinetic friction. Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it ...

This is one of my favorite demos. Easy to do and doesn't really require any equipment. The basic idea is that you support a meter stick horizontally with two fingers. Slide your fingers in and they ...

Activity 1 – Order the surfaces – How much friction do they produce? Activity 2 – Moving things quiz Activity 3 – Solve this problem Activity 4 – Conduct an investigation We need forces to make things ...