How many of you watch TV? Probably just about every one of you. Now answer this: Who is watching all these makeover shows? For networks to keep adding more to the lineup, you'd think the demand has to ...

Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...

Besides sending lots of smile-inducing horsepower to your rear tires, the crank also powers all the engine accessories necessary to keep your Chevy rolling down the highway. To do this, power is ...