How can I determine the strength of continuous hinges?
452764
As with all buy out items, consult the manufacture. He knows his product and the best way to use it.
1186263
Mechanical considerations, see reference
670653
There are specific eqn's used to determine the point at which an object will go "plastic" and then break. It is determinant on the radius and composition of the object. You have to look at youngs modulus and the tensile stress being applied to the object you are using. here is a table of some values for Youngs modulus and tensile stress: http://cougar.slvhs.slv.k12.ca.us/~pboomer/physicslectures/textass/tables7-8.jpg\n\nThe Young's modulus allows the behavior of a material under load to be calculated. For instance, it can be used to predict the amount a wire will extend under tension, or to predict the load at which a thin column will buckle under compression. Some calculations also require the use of other material properties, such as the shear modulus, density, or Poisson's ratio.\n\n\nLinear vs non-linear\n\nFor many materials, Young's modulus is a constant over a range of strains. Such materials are called linear, and are said to obey Hooke's law. Examples of linear materials include steel, carbon fiber, and glass. Rubber is a non-linear material.\n\nYou can find this kind of table for most household items, and since you are using fishing line there are different "tests" which will hold various ammts. of weight before breaking.. Ie. such as a 100 pound test will hold that mush weight as opposed to a 20 lb test which would break pretty easily. You could vary the test weight on various strings and by knowing the test you could predict at which time the string would break...
954334
To provide the basic structure, strength and stability
179742
Various springs (flat or helical) deflect linearly with load and resistance of certain wires (nichrome, etc.) varies linearly with length.  If your experiment allows or expects large deflections you may be able to combine the spring/resistors into a circuit that calibrates force/deflection/resistance-reading suitable for measurement on an ohmmeter or perhaps a strip chart recorder.  Good luck.
1171597
It sounds like a Civil Engineering problem, maybe for steel structures? Well, regardless, I suggest going to the ASCE (Am. Society of Civil Engineers) web site. They should have some good examples including some mesh - free finite element method solutions. Should give strengths, buckling info, etc.
609585
Use the biaxial bending provisions for columns.  If you want to make the math easy, give it a small unit axial load.  You used to have to do this in steel, too.
799229
a. Calculate the horizontal component of the 485 N.\nFh = 485 N*cos35\nCalculate the force of friction.\nFf = 0.57*319 N\nCalculate the net force.\nFn = Fh-Ff\nCalculate the mass of the box.\nW = m*g\nCalculate the acceleration.\nFn = m*a\nCalculate time to move s = 4.00 meters\ns = (1/2)*a*t^2\n\nb. Repeat with uk = 0.75
926220
Use a floating point, or gimbaled hydralic plates to adjust as needed. this is also a known Earthquake Resistant design.
108589
There are 5 screws on the back of your laptop. Three towards the right and two towards the left. Tighten these and your screen will be tighter. The C610's are notorious for broken right hinges though--- you'll know if yours are broken if one of the three screws on the right just spins and never stops.
768560
See: http://en.wikipedia.org/wiki/Fracture_toughness
1055779
1 ksi = 1000 psi\n\nWhat do your points represent and how did you get that answer?\n\nLater...\nE= stress * length/deflection, or force*length/(deflection*area)\nIf the tester was zeroed, your result is non-linear - .004 deflection for the first 150# and .006 for the next 150#. Could indicate yielding - or slipping. If you're sure of your work, check the data and the setup.
362696
The only link you need:\n\nhttp://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html\n\nHint:  look under "Mechanics"
110767
Yes, a pretty minimal effort at writing a question, but for what it's worth:\nUse cross bracing (making triangles) to make structure stronger.\nUse an adequate glue that really wets the wood, and lap or splint joints not simple butt joints.\nGet more strength from each stick by having as many as possible edge-down not face-down.
250625
Depends on the maker but there should be small screws adjacent to the hinges.  They may have caps over them.
238500
need to know the type of metal, then find the shear force & plug it into your equation.  don't forget to factor in each thread  (Basic solid mechanics)
984186
accn = v^2 / r or [(angular velocity)^2] * r\ntherefore,\naccn of hammer = [(2*pi)^2] * 1.8\n\nas F= ma\nTension = 7.0 * [(2*pi)^2] * 1.8\nthe tension in the chain is the force used to keep the hammer in centripetal accn.