Sunday, June 6, 2010

Wheelbarrow = Wheel + Barrow

A wheelbarrow is a tiny hand-propelled vehicle, generally with just a single wheel, created to be pushed and guided by a single person making use of two handles towards the rear or a sail may possibly be used to guide the ancient wheelbarrow by wind. The term “wheelbarrow” is produced of two words: “wheel” and “barrow.” “Barrow” can be a derivation from the Old English “bearwe” which was a device utilized for carrying loads. Because the word “barrow” is not in typical use in English these days, several people incorrectly substitute the word “barrel” in place of “barrow” as this appears to make a lot more sense (possibly simply because the cavity in a wheelbarrow resembles a half-barrel) even though it can be not a correct etymology.

The wheelbarrow is developed to distribute the weight of its load between the wheel and the operator so enabling the convenient carriage of heavier and bulkier loads than would be possible were the weight carried completely by the operator. As such it can be a second-class lever. Traditional Chinese wheelbarrows, nevertheless, had a central wheel supporting the whole load. Use of wheelbarrows is common in the construction industry and in gardening. Typical capacity is approximately 170 litres (6 cubic feet) of material.

A two-wheel type is much more stable on level ground, although the practically universal one-wheel sort has far better maneuverability in tiny spaces, on planks or when tilted ground would throw the load off balance. The use of one wheel also permits greater control of the deposition from the load on emptying.

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