1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...

Schematic illustration of Friction Force Microscopy (FFM). The AFM cantilever, a small diving board-like structure about 200 micrometers long, 50 micrometers wide, and 1 micrometer thick, has a sharp ...

As the force F is applied to block C, a pair of friction forces act on the crate at feet A and B. These friction forces create a net counterclockwise (CCW) moment about the crate’s center of mass. In ...

This video explains the role of normal force in forces of constraint, shedding light on how it affects the motion of objects in contact with surfaces. We cover key concepts and real-world examples to ...

You might have seen some of the viral videos of this giant steel slide at Belle Isle Park in Michigan, which temporarily closed this summer because riders were sliding so fast they were losing contact ...

The machine doesn’t care what it’s making—only that it’s making it fast. Frictionless systems optimize output. But meaning, memory, and margin live in the mess it leaves behind. The great smoothing is ...

Well tractors are self-propelled downhole conveyance tools that generate axial thrust to move wireline or coiled-tubing toolstrings through highly deviated and horizontal sections where gravity and ...

Stanford’s Bob Sutton and Huggy Rao on how to boost efficiency and satisfaction while also improving innovation and decision-making. Organizations too often subject their employees and customers to ...