Introduction Simply supported continuous beams are an important structural element in engineering applications. In order to design a beam effectively, it is important to have an understanding of the variations of the shear and moment along its axis. This is done to find points along the beam where these shear and moment values are a maximum. The Continuous Beam Apparatus experiment was carried out to better understand the aforementioned points. Continuous beams are those that rest over two or more supports, thereby having one or more redundant support reactions. A continuous beam provides resistance to bending when a load is applied to it [1]. Five experiments were carried out on the same specimen, with spring balances measuring the reaction …show more content…
Various reasons could be identified for these errors. The weight, structural composition and geometry of the beam were not considered in any of the calculations made which in fact would have a significant effect on the experimental results such as moment of inertia of the beam. . The variation of results could be due to numerous errors including: Defective apparatus: The springs may have been stretched and damaged and may not indicate the correct force readings Overused apparatus: The beam may have residual deformation from being used extensively over a very long period of time. Due to repeated loaded the beam could be bent therefore when adjusting the springs the final reading will be skewed Error of Parallax: There were two instances where parallax could occur. The demonstrator used a bar to position the mass pieces on the beam accurately according to the Horizontal Ruler above the beam. When the students were adjusting the beam to bring it to equilibrium using the Vertical Ruler on each side of the
Anderson and Wood (1925) determined a magnification value equal to 2800 but they neglected the deformation of the tungsten wire under different equilibrium situations. Conversely, the deformation of the wire could be sufficient to reduce the magnification factor of 30%, increasing the moment of inertia. For this reason Uhrhammer and Collins (1990) and Uhrhammer et al. (1996) recomputed the instrument static magnification (GS) that was estimated equal to 2080 ± 60. Using 2800 instead of 2080 in the BB WA simulations leads to a magnitude error of +0.129 (e.g. Uhrhammer et al., 2011).
Jessica Vandeventer 23 March 2016 Quantitative Spectroscope and Visible Light Purpose/Question- The purpose of the lab is to build a diffraction grating spectroscope, and to view different lights. We also are going to draw the light spectra of the various light sources.
Introduction: The copper content of U.S. pennies has declined over the years due to rising prices. The expensive metal makes up just 2.5 percent of one-cent pieces minted in 1982 or later; nickels, dimes and quarters, on the other hand, are mainly composed of copper. Still, today’s pennies cost more than their face value—an estimated 1.8 cents each—to produce.
Learning about the coaster before hand, allowed us to understand the science, math, and technique behind each
Materials and Methods A frog leg was used for the muscle in the experiments. The skin was removed to expose the gastrocnemius, and the bone was severed just below the achilles tendon. The femur was cut just above the knee, and the tibiofibula was severed just below the knee. Ringer 's solution was applied to the muscle to keep the muscle moist. The procedures were done using a power lab, and a force transducer with a micropositioner.
Mutually, each student performed their lift with synonymous organization; approaching the weight, commencing lift, performing the lift, finishing the lift, releasing the weight and stepping away. All of the students were
The confinement hoops for the entire confined concrete column were fabricated using ASTM A615 Grade 60 #3 deformed steel bars. The confinement hoop sets at the column were spaced at 2 in. center-to-center along the entire 104-in. height of the confined concrete column except for the 20 in.-long testing region where the confinement hoop sets were spaced at 2.25 in.
When determining the distance from this leaning tower to the rotation point we didn’t take into consideration where that “hidden” weight would be and instead just measured from its center. Since we didn’t measure the distance from the point of the “hidden” weight it would have resulted in an inaccurate measurement. This, in turn, would have then resulted in inaccurate calculations leading to an inaccurate
The measured tensions were normalized relative to the maximum tension and the lengths were normalized relative to the length at which maximum force was generated (Ln = 29 mm). The measured data and expected data were plotted together (Figure 3). Correlation between measured and expected tensions at the same normalized lengths was determined for the three expected segments of the length-tension relationship.2,3,4 This was done using piecewise linear regression and yielded r2isometric = 0.956033. The fitted curve for the isotonic experiment resulted in r2isotonic = 0.960557. The F0 was 19.5 N for the fit and 6.35 N for the guess.
The bessbug was able to carry 6 weights which has the mass of 18.85 grams, while ten times the mass of a bessbug is 17.6 grams. The maximum amount of weights the bessbug was able to pull was 10 weights which is equal to 31.46 grams. The data shows the strength of the bessbug and how much the bessbug is able to carry in all. The data occurred because the capacity of the bessbug allows the bessbug to carry 10 weights. The data supports the hypothesis because the bessbug was able to lift ten times the weight of the bessbug which is 17.6 grams, and much more because the total amount the bessbug was able to pull was 31.46 grams.
Introduction The intent of this experiment is to practice the scientific method, by constructing a bridge to bolster as many pennies as possible before it sags 1 1/8”, touching the desk. I hope to get a better perception of the scientific method by doing an experiment. I also hope to gain knowledge about the way bridges are structured to hold more weight. Based on my research, I know that the thicker the bridge is, the more weight it will bolster.
1.1 Explain how observations are used: Reference- www.slideshare.net. Text book- Penny Tassoni. Laser learning.
The time it took for each of the trials was a recorded and then based on that along with the radii measurements the calculations for the centripetal force were conducted. The purpose of this experiment was to measure the period of a swinging stopper for three selected radii in order to calculate the centripetal
Thus the measurements will repeat for each experiment, where the paper cup’s height from the ground varies in each
This experiment has to be carried out carefully