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Build your knowledge with top universities and organisations. Learn more about how FutureLearn is transforming access to education. Learn more about this course. Share this post. Q1 E : If a mass of normalsize 10 kg on a heavy industrial spring of normalsize cm creates an extension of normalsize 3 mm, then how much extension would be caused by normalsize 15 kg?
How much mass would we have to load onto the original spring to get an extension of normalsize 5 mm? But behind this law is another law which is a fine example of an inverse proportionality. What happens if we cut this spring into two equally sized pieces? More generally, the spring constant of a spring is inversely proportional to the length of the spring, assuming we are talking about a spring of a particular material and thickness.
So suppose we cut the spring in the example above exactly in two, creating two shorter springs each of length normalsize 3 cm. The tension force is defined as the force that is transmitted through a rope, string or wire when pulled by forces acting from opposite sides.
The tension force is directed over the length of the wire and pulls energy equally on the bodies at the ends. It is a law of mechanics and physics discovered by Robert Hooke. This theory of elasticity says the extension of a spring is proportional to the load applied to it.
Many materials obey this law as long as the load does not exceed the material's elastic limit. Hooke's Law , by Doodle Science, on youtube. The main component of car shocks are springs, and understanding how the spring will behave using hookes law is ideal for enhancing the technology.
What is the main objective of Hooke's Law? Hooke's Law describes the behavior of stretchy things. It states that when you pull on something its increase in length is proportional to the force. For example if something is stretchy—elastic—pulling double the increase requires double the force. What is the meaning of the negative sign in Hooke's Law? Category: science physics. In Hooke's law , the negative sign on the spring's force means that the force exerted by the spring opposes the spring's displacement.
Does Hooke's law apply to all materials? Can a force be negative? What does the spring constant depend on? How is Hooke's law used today? How do you do Hooke's Law? What does F KX mean? What does F Ke mean? How do you find the force? What is a force constant? As with any other set of forces, the forces of many springs can be combined into one resultant force. There is a negative sign on the right hand side of the equation because the restoring force always acts in the opposite direction of the displacement for example, when a spring is stretched to the left, it pulls back to the right.
The slope of this line corresponds to the spring constant k. The dotted line shows what the actual experimental plot of force might look like. The pictures of spring states at the bottom of the graph correspond to some points of the plot; the middle one is in the relaxed state no force applied. If a force results in only deformation, with no thermal, sound, or kinetic energy, the work done is stored as elastic potential energy.
In order to produce a deformation, work must be done. That is, a force must be exerted through a distance, whether you pluck a guitar string or compress a car spring. If the only result is deformation and no work goes into thermal, sound, or kinetic energy, then all the work is initially stored in the deformed object as some form of potential energy.
Elastic energy is the potential mechanical energy stored in the configuration of a material or physical system when work is performed to distort its volume or shape. For example, the potential energy PE el stored in a spring is.
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