If you’ve ever played with tops, you know that some spin easily while others wobble. Ever wonder why? The answer has to do with rotational inertia, a property shared by all rotating systems. Sometimes ...

If Earth suddenly stopped rotating, inertia, extreme winds, massive earthquakes, and climate collapse would reshape the ...

The optimal size for a clutch or brake is determined by three things: Required torque, thermal horsepower per engagement, and average required thermal horsepower. Here, we'll discuss the first, ...

Earth’s rotation shapes everything from day and night to weather and ocean currents. Scientists explain what could happen if ...