This wooden ruler will be a fantastic addition to your sewing kit, and will even prove useful for other general tasks. You'll be able to ensure absolute precision with this handy measuring tool! If successively larger loads are applied to a body and then removed it will be found that at first the body completely regains its original form upon release from the stress--in other words, the body is ~elastic~. Eventually a point will be reached where the recovery of the specimen is incomplete. This point is known as the ~elastic limit~, which may be defined as the limit beyond which it is impossible to carry the distortion of a body without producing a permanent alteration in shape. After this limit has been exceeded, the size and shape of the specimen after removal of the load will not be the same as before, and the difference or amount of change is known as the ~permanent set~. Firstly I shall get a nail and based on the size of it, drill holes into the meter rule so that it fits easily and properly. Meter rule ruler tool father's day birthday present gift dad children folding ruler personalized Christmas Permanent set is due to the ~plasticity~ of the material. A perfectly plastic substance would have no elasticity and the smallest forces would cause a set. Lead and moist clay are nearly plastic and wood possesses this property to a greater or less extent. The plasticity of wood is increased by wetting, heating, and especially by steaming and boiling. Were it not for this property it would be impossible to dry wood without destroying completely its cohesion, due to the irregularity of shrinkage.

Wooden Metre Ruler - Etsy UK

For my first rough experiment I experimented sag. I set up the experiment which is shown under the heading ‘rough trials apparatus 1’. I first put two stands on a table and attached the clamps to the ruler so that 0.05 meters of the rule at both ends were covered. I then put a stand which was holding another rule attached by a clamp in the middle of the horizontal rule; this is to measure the amount of deflection. Then I put some string around the middle of the horizontal rule, this is to allow me to attach the weights. Folding Rule/Folding Rule/Tool/Father's Day/Birthday Gift/Gift/Dad Children/Folding Ruler/Personalized/Christmas As the stress increases there is a corresponding increase in the strain. This ratio may be graphically shown by means of a diagram with the stress on the y-axis and the strain on the x-axis. This is known as the stress-strain diagram . Within the limit mentioned above the diagram is a straight line. The greater the resistance a material offers to deformation the steeper the vertical axis will be the line. If the results of similar experiments on different materials of a meter rule are plotted to the same scales, comparison is easy.Wooden Growth Chart, Nursery Growth Chart, Wooden Nursery Decor, Baby Height Chart, Personalized Growth Chart Ruler, Kids Nursery Wall Decor The same rule will be used throughout the experiment, so that mass and width etc. will remain constant. One that is easily bent or otherwise deformed is flexible. Flexibility is not the exact counterpart of stiffness, as it also involves toughness and pliability.

Wooden Meter Ruler - Etsy UK

Study of the mechanical properties of a material is concerned mostly with its behaviour in relation to stresses and strains, and the factors affecting this behaviour. Stress is a distributed force and may be defined as the mutual action:

In my first experiment I aim to find out how weight and length affect sag. I will only change one variable at a time. I shall do this by setting up an experiment as seen on the apparatus diagram 1. wooden growth chart rainbow, ruler height chart rustic vibe, solid wood decoration for a child room, vintage 1th birthday gift, I will not move when I am placing the weights on the rule and recording my results. I shall do this by keeping the weights near. I also found that the rule was slipping from the clamp when the weights were applied. This also makes the rule much harder to bend than where the pieces were held together. This results in the stiffness of the material to be increased. I think the results I gained from this experiment were sufficient enough for me to come to a formal conclusion. The results prove that the extension of the rulers depend upon the force of the weight.

Sew Easy Wooden Metre Stick Ruler | Hobbycraft

It was difficult to get my horizontal rule level as the clamps which were used to hold the rule were not clamped at the same height compared to each other. It took awhile to get them level and still there may have been a few millimetres or centimetres of difference.I could have tested shorter lengths, this would have allowed me to really see if the pendulum and sag has any similarities when the length was constant. Family Height Chart Personalized Growth Chart Baby Growth Chart Wooden Nursery Decor Family Wall Decor Height Chart for Kids When external forces act upon a beam in a direction away from its ends or a direct pull, the stress is a tensile stress. The strain is an increasing. I think the procedure I used was quite suitable for this experiment. I varied the force of the weight greatly from 0.98N to 9.8N which gave me reasonable results which I could draw conclusions with. I could have repeated the experiment several times and drawn an average; this would have helped me get more accurate results.