मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

A spring is stretched by applying a load to its free end. The strain produced in the spring is ______.

Advertisements
Advertisements

प्रश्न

A spring is stretched by applying a load to its free end. The strain produced in the spring is ______.

पर्याय

  • volumetric.

  • shear.

  • longitudinal and shear.

  • longitudinal.

MCQ
रिकाम्या जागा भरा
Advertisements

उत्तर

A spring is stretched by applying a load to its free end. The strain produced in the spring is longitudinal and shear.

Explanation:

According to the diagram where spring is suspended with fixed rigid support. Now a load is attached to the lower end of that spring. So, it is stretched by applying a load to its free end. Clearly, the length and shape of the spring change and the weight of the load behaves as a deforming force.

The change in length corresponds to longitudinal strain and the change in shape corresponds to shearing strain.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 9: Mechanical Properties of Solids - Exercises [पृष्ठ ६६]

APPEARS IN

एनसीईआरटी एक्झांप्लर Physics Exemplar [English] Class 11
पाठ 9 Mechanical Properties of Solids
Exercises | Q 9.4 | पृष्ठ ६६

संबंधित प्रश्‍न

A steel cable with a radius of 1.5 cm supports a chairlift at a ski area. If the maximum stress is not to exceed 10N m–2, what is the maximum load the cable can support?


A rigid bar of mass 15 kg is supported symmetrically by three wires each 2.0 m long. Those at each end are of copper and the middle one is of iron. Determine the ratio of their diameters if each is to have the same tension.


A rod of length 1.05 m having negligible mass is supported at its ends by two wires of steel (wire A) and aluminium (wire B) of equal lengths as shown in Figure. The cross-sectional areas of wires A and B are 1.0 mm2 and 2.0 mm2, respectively. At what point along the rod should a mass be suspended in order to produce (a) equal stresses and (b) equal strains in both steel and aluminium wires.

 


The ratio stress/strain remain constant for small deformation of a metal wire. When the deformation is made larger, will this ratio increase or decrease?


The yield point of a typical solid is about 1%. Suppose you are lying horizontally and two persons are pulling your hands and two persons are pulling your legs along your own length. How much will be the increase in your length if the strain is 1% ? Do you think your yield point is 1% or much less than that?


The breaking stress of a wire depends on


A load of 10 kg is suspended by a metal wire 3 m long and having a cross-sectional area 4 mm2. Find (a) the stress (b) the strain and (c) the elongation. Young modulus of the metal is 2.0 × 1011 N m−2

 

A charged particle is moving in a uniform magnetic field in a circular path of radius R. When the energy of the particle becomes three times the original, the new radius will be ______.


The maximum load a wire can withstand without breaking, when its length is reduced to half of its original length, will ______.


A mild steel wire of length 2L and cross-sectional area A is stretched, well within elastic limit, horizontally between two pillars (Figure). A mass m is suspended from the mid point of the wire. Strain in the wire is ______.


A rod of length l and negligible mass is suspended at its two ends by two wires of steel (wire A) and aluminium (wire B) of equal lengths (Figure). The cross-sectional areas of wires A and B are 1.0 mm2 and 2.0 mm2, respectively.

(YAl = 70 × 109 Nm−2 and Ysteel = 200 × 109 Nm–2)

  1. Mass m should be suspended close to wire A to have equal stresses in both the wires.
  2. Mass m should be suspended close to B to have equal stresses in both the wires.
  3. Mass m should be suspended at the middle of the wires to have equal stresses in both the wires.
  4. Mass m should be suspended close to wire A to have equal strain in both wires.

Is stress a vector quantity?


If 'S' is stress and 'Y' is young's modulus of the material of a wire, the energy stored in the wire per unit volume is ______.


The stress-strain graph of a material is shown in the figure. The region in which the material is elastic is ______.

 


What is an elastomer?


The SI unit of stress is ______.


When an elastic body is in equilibrium in its altered shape, the magnitude of the external deforming force is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×