1. Deformation occurs when an applied force causes a change in the shape of an object. There are two types of deformation: elastic and plastic.
2. Elastic deformation is reversible - the object returns to its original shape once the force is removed. Plastic deformation causes a permanent change in shape.
3. Hooke's law states that for elastic solids, the extension is directly proportional to the applied load within the material's limit of proportionality. Extension-load graphs produce a straight line for materials undergoing elastic deformation only.
Introduction to Mechanical Properties of Fluids
Fluids, encompassing both liquids and gases, exhibit intriguing behaviours that can be understood through the study of their mechanical properties. Class 11 introduces students to the fundamental concepts that govern how fluids behave under various conditions. From the density and pressure of fluids at rest to their dynamic characteristics during flow, this chapter delves into the essential principles shaping the behaviour of fluids. Topics such as Pascal's Law, hydrostatic pressure, Bernoulli's Principle, viscosity, and surface tension form the core of understanding the intricate world of fluid mechanics. As we explore these mechanical properties, we unlock insights into the forces that govern fluid motion, buoyancy, and the dynamic equilibrium within these fascinating substances. This foundation lays the groundwork for comprehending more complex fluid dynamics in higher studies and real-world applications.
For more information, visit. www.vavaclasses.com
Fluid mechanics is a crucial branch of physics that deals with the behavior of fluids, both liquids and gases, under various conditions. Understanding the mechanical properties of fluids is essential for grasping the fundamentals of fluid mechanics. In this set of study notes, we delve into the key concepts related to mechanical properties of fluids targeted specifically for Class 11 students.
For more information, visit- www.vavaclasses.com
Theoretical concepts, and practical examples, students explore how materials respond to external forces, how they deform under stress, and how they ultimately fail. They learn about concepts such as Hooke's Law, which describes the linear relationship between stress and strain within the elastic limit of a material, and they delve into the factors that influence the mechanical behavior of solids, including material microstructure, temperature, and rate of loading.
For more information, visit-www.vavaclasses.com
Young's modulus by single cantilever methodPraveen Vaidya
Young's modulus is a method to find the elasticity of a given solid material. The present article gives the explanation how to perform the experiment to determine the young's modulus by the use of material in the form of cantilever. The single cantilever method is used here.
Introduction to Mechanical Properties of Fluids
Fluids, encompassing both liquids and gases, exhibit intriguing behaviours that can be understood through the study of their mechanical properties. Class 11 introduces students to the fundamental concepts that govern how fluids behave under various conditions. From the density and pressure of fluids at rest to their dynamic characteristics during flow, this chapter delves into the essential principles shaping the behaviour of fluids. Topics such as Pascal's Law, hydrostatic pressure, Bernoulli's Principle, viscosity, and surface tension form the core of understanding the intricate world of fluid mechanics. As we explore these mechanical properties, we unlock insights into the forces that govern fluid motion, buoyancy, and the dynamic equilibrium within these fascinating substances. This foundation lays the groundwork for comprehending more complex fluid dynamics in higher studies and real-world applications.
For more information, visit. www.vavaclasses.com
Fluid mechanics is a crucial branch of physics that deals with the behavior of fluids, both liquids and gases, under various conditions. Understanding the mechanical properties of fluids is essential for grasping the fundamentals of fluid mechanics. In this set of study notes, we delve into the key concepts related to mechanical properties of fluids targeted specifically for Class 11 students.
For more information, visit- www.vavaclasses.com
Theoretical concepts, and practical examples, students explore how materials respond to external forces, how they deform under stress, and how they ultimately fail. They learn about concepts such as Hooke's Law, which describes the linear relationship between stress and strain within the elastic limit of a material, and they delve into the factors that influence the mechanical behavior of solids, including material microstructure, temperature, and rate of loading.
For more information, visit-www.vavaclasses.com
Young's modulus by single cantilever methodPraveen Vaidya
Young's modulus is a method to find the elasticity of a given solid material. The present article gives the explanation how to perform the experiment to determine the young's modulus by the use of material in the form of cantilever. The single cantilever method is used here.
La iluminación requiere menor espacio, y además es conveniente colocarla por
encima de la altura del gálibo. La señalización vertical se suele colocar sobre las
aceras o por encima del gálibo en el caso de paneles luminosos. Por otra parte, las
canalizaciones para cables y otras instalaciones se suelen colocar bajo la acera o
adheridas al hastial en bandejas porta-cables (ver en el capítulo 13).
Grab CBSE sample paper for class 11 Physics & practice diligently to secure apt marks. Download the free PDF now & join Studymate to accentuate your graph. Visit http://www.studymateonline.com/sample-papers/cbse-sample-papers-for-class-11-physics/
This slide introduces the concept of simple strain, a term used in mechanics to describe the deformation of a material under an applied force. The slide includes a diagram illustrating the deformation of a rectangular object under a tensile force, as well as a formula for calculating strain. Simple strain is a fundamental concept in the study of materials and mechanics, and understanding it is essential for many engineering applications
La iluminación requiere menor espacio, y además es conveniente colocarla por
encima de la altura del gálibo. La señalización vertical se suele colocar sobre las
aceras o por encima del gálibo en el caso de paneles luminosos. Por otra parte, las
canalizaciones para cables y otras instalaciones se suelen colocar bajo la acera o
adheridas al hastial en bandejas porta-cables (ver en el capítulo 13).
Grab CBSE sample paper for class 11 Physics & practice diligently to secure apt marks. Download the free PDF now & join Studymate to accentuate your graph. Visit http://www.studymateonline.com/sample-papers/cbse-sample-papers-for-class-11-physics/
This slide introduces the concept of simple strain, a term used in mechanics to describe the deformation of a material under an applied force. The slide includes a diagram illustrating the deformation of a rectangular object under a tensile force, as well as a formula for calculating strain. Simple strain is a fundamental concept in the study of materials and mechanics, and understanding it is essential for many engineering applications
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
3. Effect of Force
1. Change in Speed
2. Change in Direction
3. Change in Shape
Deformation 3
4. Deformation
Deformation is a change in shape due to
an applied force. This can be a result of
tensile (pulling) forces, compressive
(pushing) forces, shear, bending or
torsion (twisting).
Elastic deformation - This type of deformation is
reversible. Once the forces are no longer applied,
the object returns to its original shape.
Plastic deformation - This type of deformation is
not reversible. However, an object in the plastic
deformation range will first have undergone elastic
deformation, which is reversible, so the object will
return part way to its original shape.
Deformation 4
5. ELASTIC DEFORMATION
Plot, draw and interpret extension-load graphs for an elastic solid
and describe the associated experimental procedure.
Deformation 5
6. Experimental Procedure
Aim: To study the deformation of a spring
Apparatus:
◦ Spring
◦ 100 g slotted mass
◦ Metre rule
◦ Retort stand
Deformation 6
7. Procedure:
◦ Arrange the apparatus as shown below
Deformation 7
Measure the length of the
unstretched spring.
Measure the length of the
stretched spring as a mass is
added.
Repeat procedure.
8. Calculation
◦ The load (force) for every mass (100 g) is
found by using w = mg.
◦ The extension of the spring is the difference
between its stretched and unstrectched
lengths.
Deformation 8
9. Graph
◦ Plot the extension against load graph
Deformation 9
The graph is divided into two parts
1. The graph slopes up
steadily – the extension
increase as load
increases.
2. The graph bend – load is
great the spring become
permanently damage.
10. Conclusion
◦ The line is straight, and passes through the origin.
◦ Every 1 N increases in load produces the same
extra extension.
◦ If the load is doubled, the extension is doubled.
◦ Extension/Load always have the same value.
Deformation 10
12. Deformation 12
A region where extension is
proportional to a force
applied. A returns to original
form when force is removed.
A region where any further extension would
not cause it to return to its original form
14. Hooke’s Law
Hooke's law state that the extension of a
spring is proportional to the load applied to
it, provided the limit of proportionality
(elasticity limit) is not exceeded.
In term of equation:
F = kx
where
F is the force applied
k is the stiffness of spring (spring constant)
x is the extension of the spring
Deformation 14
15. Problem Solving
1. A helical spring of natural length 20 cm
is stretched to 24 cm by a force of 20 N.
What force is required to stretch the
spring to a length of 30 cm?
2. A spring, of original length 10.0 cm
stretches to 12.0 cm when a force of 40
N is applied to it. What is the extension
of the spring when a force of 26 N is
applied?
3. A 10 N load produced an extension of 5
cm. What force would produce an
extension of 15 cm?
Deformation 15
16. 4. A spring has an unstrecthed length of 12.0 cm.
its stiffness k is 8 N/cm. What load is needed to
stretch the spring to a length of 15.0 cm?
5. A spring requires a load of 2.5 N to increase its
length by 4 cm. the spring obeys Hooke’s Law.
What load will give it an extension of 12 cm?
6. An elastic bungee cord has near plastic
elasticity as long as the applied stretching force
does not exceed 5.00 N. When no force is
applied to the cord, it is 1.00 m long. When the
applied force is 5.00 N, the band stretches to a
length of 2.00 m. How long will the cord be if a
stretching force of 2.00 N is applied?
Deformation 16
17. 7. In an experiment with a spiral spring, the
following data were obtained.
8. Plot the graph of length against load, and
from the graph find the following:
(a) The length of the spring when it is not loaded.
(b) The length of the spring when the load is 100 N.
(c) The load required to produce an extension of 6
cm.
(d) Predict what will happen to the spring if a 1000
N load is added onto it.
Deformation 17
Length of Spring (cm) 8.0 10.0 12.0 14.0
Load (N) 40 90 140 190
18. 8. In an experiment with a spring, these
results were obtained.
Draw a graph of these results and
from the graph find:
(a)The length of the spring when
unstretched.
(b)The length of the spring when the load is
80 N.
(c)The load needed to produce an extension
of 5.0 cm.
Deformation 18
Length of Spring (cm) 9.0 11.0 13.0 15.0
Load (N) 50 100 150 200
19. 1. A student carries out an experiment to plot
an extension / load graph for a spring. The
diagrams show the apparatus at the start of
the experiment and with a load added.
What is the extension caused by the load?
Deformation 19
A x B y C y + x D y - x
D
20. 2. A student adds loads to an elastic cord.
He measures the length of the cord for
each load.
He then plots a graph from the results.
Deformation 20
21. Which length is plotted on the vertical axis?
A. measured length
B. original length
C. (measured length – original length)
D. (measured length + original length)
Deformation 21
22. 3. A spring is suspended from a stand.
Loads are added and the extensions are
measured.
Deformation 22
23. Which graph shows the result of plotting
extension against load?
Deformation 23
D
24. 4. Which part of the graph shows the limit
of proportionality for an elastic solid?
Deformation 24
A O B OP C P D PO
C
25. 5. The graph shows the extension of a
piece of copper wire as the load on it is
increased.
Deformation 25
26. What does the graph show?
A. At a certain load the wire becomes
easier to extend.
B. At a certain load the wire becomes
harder to extend.
C. The load and extension are directly
proportional for any load.
D. The load and extension are inversely
proportional for any load.
Deformation 26
27. 6. An extension-load graph for a wire is
shown.
1. What is the load at the limit of
proportionality for the wire?
Deformation 27
A 4 N B 15 N C 60 N D 70 N C
28. 7. A spring balance is calibrated to give
readings in newtons.
1. The graph shows how the length of the
spring varies with the load.
Deformation 28
29. A load causes the spring of the balance to
extend by 3 cm.
What is the balance reading?
Deformation 29
A 3 N B 5 N C 10 N D 15 N
D
30. 8. Objects with different masses are hung
on a 10 cm spring. The diagram shows
how much the spring stretches.
Deformation 30
31. The extension of the spring is directly
proportional to the mass hung on it.
What is the mass of object M?
A. 110 g
B. 150 g
C. 200 g
D. 300 g
Deformation 31
32. 9. The table shows how the extension of a
spring varies with load.
Between which two loads would you find
the limit of proportionality?
A. 0 N and 2 N
B. 8 N and 10 N
C. 10 N and 12 N
D. 14 N and 16 N
Deformation 32
33. 10. The table below shows the length of a
wire as the load on it is increased.
Which graph correctly shows the
extension of the wire plotted against
load?
Deformation 33
35. 11. An experiment is carried out to measure
the extension of a rubber band for
different loads.
The results are shown below.
Which figure is missing from the table?
Deformation 35
A 16.5 B 17.3 C 17.4 D 18.3
B
36. 12. A metal wire, initially 1.000 m long, extends
by 4 mm when a load of 2 N is added to it.
What will the length of the wire be if a
further 3 N is added, assuming it does not
extend beyond its limit of proportionality?
A. 1.060 m
B. 1.080 m
C. 1.010 m
D. 1.012 m
Deformation 36