flip out
to go crazy, to become very angry
My friend flipped out when she heard that I had damaged her car.
• flirt with the idea of (doing something)
• float a loan
• flora and fauna
• flunk out
• flush with (something)
• flush with (something)
• fly by the seat of one`s pants
• fly in the face of (someone or something)
• fly into the face of danger
• fly off the handle
• Idioms Quiz
• bail out (of something)
• on the average
• wise guy
• eat like a bird
• take off
• on the double
• set tongues wagging
• get mixed up
• slow as molasses in January
• get the message

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### Wheel and Axle

Man's Way of Helping Himself:
The wheel and axle consists of a large wheel and a small axle so fastened that they rotate together.

When the large wheel makes one revolution, P falls a distance equal to the circumference of the wheel. While P moves downward, W likewise moves, but its motion is upward, and the distance it moves is small, being equal only to the circumference of the small axle. But a small force at P will sustain a larger force at W; if the circumference of the large wheel is 40 inches, and that of the small wheel 10 inches, a load of 100 at W can be sustained by a force of 25 at P. The increase in force of the wheel and axle depends upon the relative size of the two parts, that is, upon the circumference of wheel as compared with circumference of axle, and since the ratio between circumference and radius is constant, the ratio of the wheel and axle combination is the ratio of the long radius to the short radius.

For example, in a wheel and axle of radii 20 and 4, respectively, a given weight at P would balance 5 times as great a load at W.

FIG. - The wheel and axle.