1)explaind the meaning of young modulus
2)what do you understand by the modulus of elasticity of a cantilever{practically}
3)what are the precautions observed when performing a cantilever practical
4)what is the conclusion from the practical
please answers are needed immediately
You seem to be using the word "practical" as a noun, although it is an adjective. In plain English, your question does not make sense.
A definition of Youngs modulaus can easily be found with a computer search.
http://en.wikipedia.org/wiki/Young%27s_modulus
1) The Young's modulus, also known as the elastic modulus or modulus of elasticity, is a measure of the stiffness of a material. It quantifies how much a solid material deforms under applied stress. Specifically, Young's modulus is defined as the ratio of stress to strain within the elastic range of a material. In simpler terms, it measures how much a material stretches or compresses in proportion to the force applied to it.
2) The modulus of elasticity of a cantilever refers to its ability to resist bending or deformation when a load is applied. In practical terms, it is a measure of how flexible or rigid the cantilever is when a force is exerted onto it. The modulus of elasticity is determined by conducting experiments where a cantilever is subjected to different loads and its deflection is measured. A cantilever with a higher modulus of elasticity will be stiffer and less likely to bend or deform significantly under given loads.
3) When performing a cantilever practical, it is important to observe several precautions to ensure accurate and reliable results:
- Ensure that the cantilever is securely fixed and properly aligned to avoid any additional sources of bending or deflection.
- Use appropriate measuring instruments, such as a micrometer or Vernier caliper, to accurately measure the dimensions of the cantilever.
- Minimize any external disturbances or vibrations that could affect the measurements. Perform the experiment in a controlled environment to reduce the impact of air drafts or other environmental factors.
- Avoid applying excessive loads that may cause permanent deformation or failure of the cantilever.
- Take multiple readings and calculate the average to reduce errors and increase the precision of the results.
- Record all the necessary data, including the applied loads and corresponding deflections, ensuring a comprehensive and accurate record of the experiment.
4) The conclusion of the practical will depend on the specific objectives and parameters of the experiment. Generally, the conclusion will involve analyzing the relationship between the applied load and the resulting deflection of the cantilever. It may include determining the modulus of elasticity of the material, assessing the accuracy of the measurements, and identifying any linear or nonlinear behavior within the elastic range. The practical may also provide insights into the strength, resilience, and limitations of the material or the design of the cantilever structure. The conclusions drawn from the practical should be based on the data collected and analyzed during the experiment.