you place a massive spinning pipe under the car won’t the gyroscopic force make it hard to steer? I know with a disk you get some torque problems when you add or remove power, but with the axis of rotation vertical it does not affect your steering significantly. How much force would you need to overcome the effect of placing the axis horizontally? I have chosen to collate our various correspondences into one posting because the train of thought was getting rather convoluted. I now post the complete proof that a cylinder (or disc) will have greater rotational inertia than a pipe (or ring) if the two have the same outer radius and have the same material density.

Working the equations out from first principles using a REFERENCE MASS is necessary because the equations that you posted do not use the same mass terms. Direct comparison of the two equations is misleading and could direct the reader to the wrong conclusion i.e that a pipe has greater ‘I’ than a cylinder. I will now derive general equations for a ring or pipe, and then develop the equation further to the specific case in your item 1). Of course an increasing radius will increase ‘I’, but you are changing the basis of the discussion.

The original question was: is a pipe or cylinder the best tool for the job of storing rotational energy, given that the two have the same outer dimensions. That is, which has the greatest ‘I’? Now, M is a constant (it is our REFERENCE mass of the whole disk irrespective of the size of hole), ‘a’ is also a constant because the disc & ring have SAME outer radius. Thus ‘I’ must reduce as ‘b’ increases. So ‘I’ for a ring is always smaller than ‘I’ for a disc given that the two have the same external dimensions & have the same material density.

We are temporarily moving into an apartment. We are selling our 3600 sq ft. home and have a lot of belongings we need to store on a month to month basis until we move into a new home. We do NOT want to pack ourselves. Or self-store. Can anyone give us an idea of who does this well and can be trusted to make this as painless as possible. Try Be-kins Moving & Storage (or a similar company that has local warehouse space. Mayflower might be another alternative.)

For a price they will box your belongings and place them into large wooden vaults and store everything in their warehouse. Unfortunately, other than knowing this service is available, I don’t have a real good handle on how much it could cost you. Delivery Limited on Denton Drive. They will give you the most painless move you can ask for. Delivery Limited does most of the moves for the design trade, total white glove service. Everything is stored in a temp controlled warehouse. A little more expensive than your usual movers, but if you have expensive furnishings, worth every penny.

This may be off-topic, I’m not sure where to look….. Can anyone direct me to a web site with information on storage of paint and other flammable/hazardous chemicals in the home? Can anyone recommend a device that can be attached to a wall and provide a secure anchor point to loop around a padlocked cable for board storage. How about a long bolt right through the wall to the inside? Anti-theft screws (with heads that drive only one way)? (I’d guess any device relying on being driven/screwed in from the outside could be pried out, though.

A Melon Park non-profit organization, the Humane Education Network, is expanding its office and is looking for an office storage cabinet. Ideally this would be about 6 ft high (80 inches would be too high, given the space it has to fit into), maybe 3 or 4 ft wide, maybe 15 inches deep. But beggars can’t be choosers and we are flexible on the exact dimensions. The Humane Education Network campaigns against cruelty to animals, and is “503(c)”. I believe this means that the value of any donated item is tax-deductible to you. Ideally we are looking for a freebee, but I could probably shell out a small amount if that would help. We can arrange transport (somehow – I’ll cross that bridge when I come to it).

This is a bit of a wild shot in the dark, but if anyone reading this has such a beast that they would like to send our way, I’d very much appreciate hearing from them! Metal Storage Cabinet 6′ ht x 3′ wide x 18″deep ! Ideal for business office supplies.In Great Shape. 6 shelves, adjustable, duel locking doors. The Naval Air Systems Command intends to procure office systems furniture to include modular systems workstations, Office Ergo Chairs/Secretarial/Task Seating products, and Office Storage Cabinets/Units/Miscellaneous stand alone furniture in accordance with specifications and drawings. The workstations shall consist of metal cabinetry including, but not limited to, storage components, super structure and all associated support standards and structural paneling.

Additional office furniture shall include executive style furniture consisting of wood material, and conference tables also consisting of wood material in accordance with specification and drawings. The workstations and other furniture shall be delivered and installed at the Naval Air Station Patuxent River, Maryland. This requirement is being procured under full and open competition procedures. The installation is tentatively scheduled to begin February 1997.

Does anyone know of a municipality that requires interior landscaping inside the actual mini-storage area? We require screening, of course, and shading (which can be accomplished in the buffer yard) of 20% of the impervious surface, but I’ll sincerely interested to know if any municipality requires actual landscape islands or planters to be mixed in with the storage buildings and drive aisles? “It is a universal fact that where the value of land is the highest, civilization exhibits the greatest luxury side by side with the most piteous destitution.

To see human beings in the most abject, the most helpless and hopeless condition, you must go, not to the unfenced prairies, … but to the great cities where the ownership of a little patch of ground is a fortune” Storage Management API Architects to design the user interface for the client product. * User/Support Interface Design: You will use your knowledge of the operational requirements of a large (UNIX or NT) storage facility to design a user friendly, Plug, Play and Forget style interface for the products. * Product Automation: You will work with the software development team to automate as many management functions as possible.

Specification and Documentation: You will write specifications for the user interface as well as documenting the interface itself. Qualifications include: You are highly focused, enthusiastic professional with a can-do attitude, and excellent communication skills. You have at least a B.Sc. (advanced degrees are an asset), and experience in a large UNIX or NT storage facility. The ability to implement a user interface as a web interface and/or the ability to manage a team supporting this functionality would be a definite asset. Your track record shows that you: * Are team players with outstanding oral and written communication skills. * Have first hand knowledge of the operational requirements of a large (UNIX or NT) storage facility. * Have the ability to design user-friendly interfaces. * Have the vision necessary to move our product towards the Plug, Play and Forget ideal, where as many management functions as possible are automated.