Some wheelbarrows have long handles to provide better leverage and control when lifting and maneuvering heavy loads. Longer handles allow the user to maintain a comfortable distance from the load, reducing strain on the back and arms. They also facilitate easier tipping and dumping of materials, making the wheelbarrow more efficient for tasks involving heavy or bulky items.
some are, others are made of plastic, it all depends on the manufacturer
They can be traced back to ancient China. See the related link for more information.There is archeological evidence that the ancient Greeks had wheelbarrows about 2400 years ago in 407 B.C. The Chinese are known to have wheelbarrows about 600 years later, around 210 A.D.
To take advantage of leverage.
Longer the handle-the more leverage
The number of wheelbarrows of aggregate in 1 cubic metre of concrete depends on the size of the wheelbarrow and the aggregate's density. Typically, a standard wheelbarrow holds about 0.1 cubic metres of material. Therefore, you would need approximately 10 wheelbarrows of aggregate to fill 1 cubic metre of concrete, assuming the wheelbarrow is filled to capacity.
Wheelbarrows on building sites have long handles to provide better leverage and control, making it easier for users to lift and maneuver heavy loads. The extended handles allow for a more comfortable stance while pushing, reducing strain on the back and arms. Additionally, the longer handles enable the wheelbarrow to navigate uneven terrain and tight spaces more effectively.
Because longer handles distribute weight more evenly, as apposed to shorter handles which are for lighter objects that don't require the same weight distribution.add. And the length between the handles and the wheel axle may be considered as a lever, with the load carried in between.[note. Chinese wheelbarrows of old used to have the wheel under the load, which makes for a more maneuverable wheelbarrow, but suited really to smooth country.]
Leverage. The longer the handle, the easier it is to lift the load.
Long handles came into being to help with handicapped people. The long handles are now a requirement on any new doors in commercial buildings.
All hardware stores sell wheelbarrows. Ace sells a range of wheelbarrows starting at 60$ for a small wheelbarrow. They also sell heavy duty carts and wheelbarrows.
Depends really how big the wheelbarrows are and how much they weight.
No Romans did not use wheelbarrows the wheel barrows were practicaly invented after.
some are, others are made of plastic, it all depends on the manufacturer
Wheelbarrows are used to tansport heavy or otherwise unyieldy loads. They were instrumental in technological advancement.
18
According to the weblink below, there were 40 wheelbarrows on the First Fleet.
no?