The formula for calculating the force needed to lengthen a beam is: Force = (Length x Young's Modulus x Area) / Original Length.
The Young's Modulus of a material can be determined through tensile testing, in which the material is subjected to a known force and the resulting strain is measured. The Young's Modulus is then calculated as the ratio of stress to strain.
Yes, the length of the beam does have an impact on the force needed to lengthen it. The longer the beam, the greater the force required to lengthen it by a certain amount.
The unit of measurement for Young's Modulus is usually expressed in Pascals (Pa) or Megapascals (MPa), which is a unit of pressure or stress.
Yes, the force needed to lengthen a beam can be reduced by increasing the cross-sectional area of the beam or by using a material with a higher Young's Modulus. Additionally, using supports or braces can also help distribute the force and reduce the amount needed to lengthen the beam.