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The following is taking from the 'Outline Answers' of Part (A) of the 2009 Noise and Vibration Control Engineering paper from an examination as part of the Diploma in Acoustics and Noise Control which is accredited by the Institute of Acoustics.
"Inertia blocks are massive supports used for isolating foundations beneath vibration-sources and/or vibration-sensitive machines. Inertia blocks increase the isolated mass and therefore decrease the natural frequency of the vibrating system; particularly useful for dealing with very low frequency vibration problems, e.g. isolating a recording studio from an underground railway."
It is generally considered that the equipment should be rigidly mounted to the inertia block, a view also taken by Bies and Hansen (2009). The inertia block should also be made of rigid material such as concrete.
What else can I help you with?
To design a building which type of moment of inertia you use about xaxis about yaxis or polar moment of inertia?
We use y_y axes
Another term for resistance to change or a measure of mass is what?
"inertia"
What is inertia in a 3 Phase motor?
A motor when running has inertia in the rotating parts, which is a reserve of kinetic energy. The kinetic energy is found as the moment of inertia times the square of the angular velocity.
Mass moment of inertia of a flywheel?
define moment of inertia§ I is the moment of inertia of the mass about the center of rotation. The moment of inertia is the measure of resistance to torque applied on a spinning object (i.e. the higher the moment of inertia, the slower it will spin after being applied a given force).
How much does 454 engine block weigh?
The weight of a 454 engine block, specifically the big block V8 engine commonly used in Chevrolet vehicles, typically ranges from about 600 to 700 pounds (272 to 318 kg) without accessories. This weight can vary depending on the specific design and any additional components attached to the engine.
To design a building which type of moment of inertia you use about xaxis about yaxis or polar moment of inertia?
We use y_y axes
Does a 2-kg iron brick have as much inertia as a 1-kg block of wood?
Yes, the 2-kg iron brick has more inertia than the 1-kg block of wood. Inertia is directly proportional to mass, so an object with more mass has more resistance to changes in its state of motion.
What has maximum inertia if all have the same volume wooden block or glass block or iron block or aluminum block?
Inertia is directly proportional to mass.If all of the blocks have the same volume, they will have different masses because those materials have different densities. Mass = density x volume.The object with the highest density will have the highest mass and therefore the highest inertia.Densities:glass ~ 2500kg/m3 (but can range from 2000 to 8000kg/m3)aluminum 2700kg/m3iron 7850kg/m3wood ~ 550kg/m3 (but can range from 150 to 1350kg/m3)
What has more inertia a balloon or a cinder block?
Inertia is the ability of the object to resist changes in the state of motion. It would be harder to push a cinder block and make it accelerate. Therefore, the cinder block has more inertia. The more mass, the more inertia.
What is the difference between randomized block design and completely randomized design?
principle of local control is present in randomised block design but missing in completely randomised design variations are present in completely randomised design but under randomised block design blocking reduces known but irrelevant sources of variations. One way annova is used to analyse the completely randomised design and two way annova is used to analyse the randomised block design.
What are the different types of block printing?
While block printing all involves some type of carved block there are a few different types of printing. Stamping is where you place the block on a piece of material or paper and apply pressure to transfer the design. Another method is rubbing. This method involves putting the block on a flat surface, placing the paper or material over the block and rubbing the back of the material to transfer the design. The third method is to use a printing press.
At what cubic inch does a engine go from a small block to a big block?
BIG BLOCK OR SMALL BLOCK DOES NOT DEPEND ON CUBIC INCHES . IT IS THE DESIGN OF THE BLOCK ITS SELF.
What is the strongest home design material. Concrete block or wood frame?
concrete block
What are the limitations of Randomized block design?
The limitations of randomized block design include its non-suitability with large numbers of treatments. It also includes interactions between block and treatment effects increase error.
What is the statistical model for factorial design under randomized complete block design?
reference for factorial completly randomised design
What is a randomized incomplete block design?
A randomized incomplete block design (RIBD) is an experimental design used when it's impractical to include all treatments in every block due to constraints like time or resources. In this design, treatments are randomly assigned to a subset of experimental units within each block, ensuring that each block contains only a portion of the total treatments. This approach helps control for block effects while allowing for a more flexible allocation of treatments, making it useful in various agricultural and clinical trials. The design aims to improve the precision of treatment comparisons while managing incomplete data.
While finding alternatives section modulus to be checked or moment of inertia to be checked?
If you are looking to find alternatives for a cross-section design, it is generally recommended to check both the section modulus and the moment of inertia. The section modulus helps determine the resistance of a beam to bending stress, while the moment of inertia indicates the distribution of an area about a neutral axis. Both parameters are crucial for ensuring the structural integrity and efficiency of the design.
