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• CBSE×
• Class 11 Science×
• Physics×
• Mechanical Properties Of Solids×
• Elasticity×

# Elasticity Free Doubts and Solutions

## Dear teacher is this statement is true:when we apply deforming force on body its molecular arrangement changes leading to strain now due to property of elasticity body restores itself by restoring force called stress.so the correct sequence will be deforming force then strain then stress.                                                                                                                                                         Waiting for response. Thank you

Asked by Monika Singh 28th January 2016, 2:55 PM

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## why does an experimental bottle in a lab is fitted with cork and not with rubber?

Asked by Pawan 5th September 2015, 6:26 PM

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## why bridges have I shaped beam?

Asked by vipul_p_doshi 2nd May 2015, 3:31 PM

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## an iron rod 4m long and 0.5cm2 in cross section stretches 1mm when a mass of 225kg is hung from its lower end . calculate youngs modolus of iron?

Asked by sammy123 19th March 2015, 6:42 PM

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## <div><img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=16e0163397a1613099801f3638ac03f1.png" alt="W h a t space i s space f o r c e space r e q u i r e d space t o space s t r e t c h space a space s t e e l space w i r e space 1 s q. c m space i n space c r o s s minus s e c t i o n space t o space d o u b l e space i t s space l e n g t h ? left parenthesis Y subscript s equals 2 cross times 10 to the power of 11 N space m to the power of negative 2 end exponent right parenthesis" align="middle" /></div>

Asked by surajsubedi14 28th February 2015, 8:28 PM

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## If a compressive force of 3 * 10^4 N i s exerted on the end of a 20 cm long bone of cross sectional area 3.6 cm square  (a) will the bone break  (b) if not by what length will it shorten

Asked by Vedant 25th December 2014, 3:27 PM

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## A metal wire is loaded with a force still in the elastic limit. When it is deformed, some energy gets stored in it due to work done by force. Is this energy recovered or lost?

Asked by SS27 17th December 2014, 9:08 PM

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## When a force of 480 N is applied on the wire of length 2.5 mm of radius 0.007 mm then the wire is increased by length 2.5739 mm.Find the Young's modulus of elasticity of wire

Asked by rohit kumar 10th September 2014, 12:09 AM

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## Plot stress vs strain curve for a metal. On the graph depict: (i)  Yield point (ii) Fracture point (iii) Proportional limit (iv) Permanent set.

Asked by Topperlearning User 24th July 2014, 4:52 PM

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## Which is more elastic, steel or rubber? why?

Asked by Topperlearning User 24th July 2014, 4:41 PM

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## Which type of substances are called elastomers? Give one example.

Asked by Topperlearning User 24th July 2014, 4:41 PM

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## The stress-strain graph for a metal wire is shown in the figure.  Up to the point E, the wire returns to its original state O along the curve EPO, when it is gradually unloaded.  Point B corresponds to the fracture of the wire. (i)  Up to what point on the curve is Hooke's law obeyed?  This point is somtimes called the "Proportional Limit". (ii)  Which point on the curve corresponds to the 'elastic limit' or 'yield point' of the wire? (iii)  Indicate the elastic and plastic regions of the stress-strain graph. (iv)  Describe what happens when the wire is loaded up to a stress corresponding to the point A on the graph, and then unloaded gradually.  In particular, explain the dotted curve. (v)  What is peculiar about the portion of the stress-strain graph from C to B?  Up to what stress can the wire be subjected without causing fracture?

Asked by Topperlearning User 24th July 2014, 4:39 PM

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## State Hooke's law.  Is it the fundamental law of elasticity?

Asked by Topperlearning User 24th July 2014, 3:32 PM

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## What do you mean by the elastic limit?

Asked by Topperlearning User 24th July 2014, 3:25 PM

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## The stress versus strain graphs for two materials A and B are shown in the figure.  The graphs are to the same scale. (i)  Which material has greater Young's modulus? (ii)  Which material is more ductile? (iii)  Which is more brittle? (iv)  Which of the two is the stronger material?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## Two different types of rubber are found to have the stress-strain curves shown below in the figure below.            (i)  In which significant ways do these curves differ from the stress-strain curve of a metal wire. (ii)  A heavy machine is to be installed in a factory.  To absorb vibrations of the machine, a block of rubber is placed between the machinery and the floor.  Which of the two rubbers A and B would you prefer to use for this purpose?  Why? (iii)  Which of the two rubber materials would you choose for a car tyre?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## What do you mean by normal stress?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## What do you mean by stress?  Is it scalar or vector?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## What is elastic fatigue?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## What is a perfectly plastic body?

Asked by Topperlearning User 4th June 2014, 1:23 PM