# Which of the following solid has a curved surface?

cylinder

## Which 3D object is just one curved surface?

A sphere has no edges and therefore no corners. It has one curved face that goes all the way around.

## What is a curved shape?

A curve is a shape or a line which is smoothly drawn in a plane having a bent or turns in it. For example, a circle is an example of curved-shape. ... Plane or Two Dimensional Geometry. Solid or Three Dimensional Geometry.

triangle

Triangle

cylinder

## What is the best shape?

• The Platonic solids.
• An icosahedron and a small stellated dodecahedron.
• Steffen's flexible polyhedron has 14 triangular faces, 21 edges and 9 vertices.
• Net for Steffen's flexible polyhedron.

## What shape of beam is strongest?

The most efficient shape for both directions in 2D is a box (a square shell) however the most efficient shape for bending in any direction is a cylindrical shell or tube. But, for unidirectional bending, the I or wide flange beam is superior.

## Which shape of pillar is the strongest?

some thought the number of sides mattered, some thought the corners were weakness, others used prior knowledge of shapes from our other tests to suggest the triangle would be strongest. To our surprise all three pillars were able to hold all 89 of our classroom dice!

## What is the shape of a pillar?

Several shapes of pillars, including circular, diamond, square, and triangular structures, and afew particle sizes are considered.

## Is an arch or triangle stronger?

triangular support structure for a bridge, then the arc can bear a greater load than a single triangle. ... Triangles can be used to make a structure as strong as an arc, however on a one-to-one comparison, a single arced structure will be able to support more load than a simple triangular structure.

## Are circles stronger than squares?

Yes. Circles are much stronger than squares due to the even weight distribution. Squares have weak points, in the center between each corner. A steel pipe will handle much more weight than a steel square tube.

## Why circles are the best shape?

As the ultimate curvilinear shape, the circle embodies all of the attributes that attract us: it is a safe, gentle, pleasant, graceful, dreamy, and even beautiful shape that evokes calmness, peacefulness, and relaxation.

## Which is stronger arch or truss bridge?

Based on the incremental deflection averages, the truss bridge is 10.

## What is the weakest bridge?

The weight placed on a beam bridge is pressed directly downward, toward any underneath support, which makes the middle portion of the bridge the weakest. Beam bridges use vertical supports to secure the weight over longer distances.

Rolling Bridge

## What types of bridges are the strongest?

Overall the beam bridge appeared to be the strongest type, although the truss bridge was more rigid up until the point of failure. I observed that all of the truss bridge failures involved the separation of an end post joint, which were glued.

## What are the 7 main types of bridges?

What are the 7 main types of bridges?

• Beam Bridge.
• Truss Bridge.
• Cantilever Bridge.
• Arch Bridge.
• Tied Arch Bridge.
• Suspension Bridge.
• Cable-stayed Bridge.

## Which truss is strongest?

In this experiment we have tested which type of truss bridge is the strongest, yet uses the least amount of material. Two of the most used truss bridges are of the Pratt and Howe design. Through our experiment it was found that the bridge design that minimized the maximum compression force was the Howe Bridge.

## How are bridges so strong?

Suspension bridges are strong because the force on the bridge gets spread out. The weight of the cars or trains or horses, whatever's traveling across it, pulls on the cables, creating tension. Those cables then pull down on the towers and also pull on the anchors on either end of the bridge, to hold up the deck.

## What keeps a bridge from falling down?

They do it by carefully balancing two main kinds of forces called compression (a pushing or squeezing force, acting inward) and tension (a pulling or stretching force, acting outward), channeling the load (the total weight of the bridge and the things it carries) onto abutments (the supports at either side) and piers ( ...

## How do you make a strong bridge?

While connecting two sides, make triangles. If you really have time and want your bridge to be very strong, you may also divide each triangle to 3 smaller triangles. This will give additional strength to your bridge. You may also glue additional strips of pasta over the roadway.

## How do bridges collapse?

The most common causes of bridge failure are structural and design deficiencies, corrosion, construction and supervision mistakes, accidental overload and impact, scour, and lack of maintenance or inspection (Biezma and Schanack, 2007).