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Why hollow shaft has greater strength and stiffness than solid shaft of the same weight?
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Can a concrete boat float?
Yes- because they are not a solid block of concrete- they are hollow with a large air space. The weight of the water displaced is greater than the weight of the hollow concrete hull, and it will float.
Is the hockey o stick hollow?
the reebok o stick is semi hollow so to say. from about a inch above the "o's" or holes inthe stick there is black foam in the shaft and blade for support and strength. from there up the stick is hollow for the rest of the shaft. the reason behind the holes in the shaft of the stick is for weight savings and strength. if you look closely at the holes they are not perfectly round they are oval and that is for strength as an arch displase stress better.
What is the purpose of using a titanium frame?
Titanium bicycle frames offer a high degree of strength for a relatively light weight with fairly good stiffness and little to no corrosion over time.
Why are the cross sections of metal beam in the shape of the letter I instead of solid rectangles?
for greater strength and increased moment for the same weight
Why a bicycle frame has hollow pipes other than solid metal bars?
Because most of the strength of a cylindrical piece is in the outer layer, so by using pipes you get a better strength-to-weight ratio than by using solid bars.
How do the hollow bones in a bird affect their flight?
Hollow bones have a better strength to weight ratio allowing the birds to be lighter. A lighter bird can fly faster and glide better providing better efficiency (more work per unit of energy expended).
What is the weight of a hollow block?
1.5kg
What is the weight of hollow blocks?
1.5kg
Why is hollow steel pipe stronger than solid steel?
For a given outer diameter, the solid shaft is stronger, but it weighs more.For a given weight, the hollow shaft is stronger because it has a bigger diameter.due to less weight & less bending moment..............the resultant bending moment for a solid pipe is much larger than for a hollow one because of their weight difference
Why feeder cable is cylindrical hollow?
Since the electrons in a current flow are charged in the same direction, they repel each other. That makes them want to travel on the surface of the conductor. The center of the conductor becomes wasted material, so the preference is to save money and weight, and make it hollow or, for strength enhancement, to make the core out of some other material with a high tensile strength.
Difference between strength stiffness?
Strength and stiffness are not the same thing. Here's an analogy: A rubber band is stretched to failure. The rubber band failed at five pounds of force, but it stretched more than double its length before failure. The rubber band was not very stiff. In fact, it was elastic. Next, we stretch a kite string and find that it also fails at five pounds. It only stretched five percent before failure. It is very stiff. Both the rubber band and the kite string have the same ultimate strength. However, one is very stiff and the other is very flexible. This should demonstrate that strength and stiffness are not the same thing, and they are dependent upon the chosen material. Furthermore, the shape of the material also determines its stiffness without affecting its ultimate strength. For instance, if we take a plastic ruler that is 1/8" thick and 1" wide and bend it in the flat direction it is obvious that it is flexible. However, if we try to bend across the 1" thickness we find that it is very stiff. This demonstrates that the shape of the material causes the stiffness to change. We can take a piece of metal with a given weight and length and change its stiffness by making it narrower and thicker. Conversely, we can make it more flexible by making it wider and thinner.
What are the advantages of using a hollow shaft in a power transmission system over a solid shaft?
Most of the force in a shaft is carried by the outer layers of the shaft, and very. very little by the center. By using a hollow shaft you get almost the same turning strength for a lot less weight and material.
