Home
Class 11
PHYSICS
Young's modulus of steel is 2xx10^12 cgs...

Young's modulus of steel is `2xx10^12` cgs unit. Find its value in St unit.

Text Solution

Verified by Experts

`Y=2xx10^12 "dyne"//cm^2=(2xx10^12 "dyne")/(1cm^2)=((1xx10^12)/(10^5)"Newton")/(1/10^4m^2)=(2xx10^12xx10^4)/10^5N//m^2=2xx10^11N//m^2`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • OSCILLATION AND WAVES

    PATHFINDER|Exercise QUESTION BANK|300 Videos

  • ROTATIONAL MECHANICS

    PATHFINDER|Exercise QUESTION BANK|141 Videos

Similar Questions

Explore conceptually related problems

What is modulus of rigidity? Young's modulus of a body is 24xx10^11 dyne/ cm^2 . Find the range of its modulus of rigidity.

The Young's modulus of a metal is 2 xx 10^(12) "dync/cm"^(2) - and its breaking stress is 11000 kg//"cm"^2 . In case of longitudinal strain the maximum energy that can be stored per cubic metre of this metal is approximately (Assume g = 10 m//s^2 )

Knowledge Check

  • Young's modulus of steel is 1.9xx10^(11) N//m^2 When expressed is cgs units of "dynes"//cm^2 , it will be equal to (1N =10^5 "dyne", 1m^2 =10^4 cm^2)

    A
    `1.9xx10^(10)`
    B
    `1.9xx10^(11)`
    C
    `1.9xx10^(12)`
    D
    `1.9xx10^(13)`

  • A steel wire of cross-sectional area 3.0xx10^-5m^-2 stretches by the same amount as a copper wire of cross-sectional area 4.0xx10^-5m^2 under the same load. What is the ratio of the original length of the steel wire to that of the copper wire ? Young's modulus of steel is 2.0xx10^11 Nm^-2 and that of copper is 1.0xx10^11Nm^-2 .

    A
    1:2
    B
    1:1
    C
    3:2
    D
    2:1

  • The Young's modulus of a metal is 1.2xx10^11Pa and its interatomic force constant is 3.6xx10^-9Nm^-1 the average distance between atoms is

    A
    `3xx10^-16 m`
    B
    `3xx10^-18 m`
    C
    `3xx10^-20 m`
    D
    `3xx10^-20 cm`

    • Similar Questions

    Explore conceptually related problems

    A steel and a brass wire .each of length 50 cm and cross sectional area 0.005cm^(2) hang from a ceiling and are 15 cm apart Lower ends of the wires are attached to a light horizontal bar .A suitable downward load is applied to the bar so that each of the wires extends in length by 0.1 cm . At what distance from the steel wire the load must be applied ? [ Young 's modulus of steel is 2xx10^(12) dynes /cm^(2) and that of brass is 1xx10^(12)"dynes"//cm^(2)]

    A sphere of mass 25 kg and radius 0.1 m is hung from the celling of a room with the help of a steel wire. The height of the ceiling from the floor is 5.21 m. When the sphere is hung just like a pendulam, its lower surface touches the floor of the room. What will be the velocity of the sphere at the lowest points of its oscillation? The young's modulus for steel = 2 times 10^11 N.m^-2 , the initial length of the wire =5 m and the radius of the wire =5 times 10^-4 m .

    "Young's modulus of steel is 2.4times10^12 dyne/ cm^2 "----What do you mean by this: statement?

    A steel wire of uniform diameter has length 2.5 m, mass 0.016 kg and density 7.9 times 10^3 kg.m^-3 . What will be the Young's modulus of steel if a load of 12 kg is needed to elongate the wire by 1.8 mm?

    A light rod of length 2 m is suspended from the ceiling horizontally by means of two vertical wires of equal length tied to its ends. One of the wire is made of steel and is cross section 10^-3 m^2 and the other is of brass of cross section 2 times 10^-3 m^2 . Young's modulus for steel is 2 times 10^11 N.m^-2 and for brass is 10^11 N.m^-2 . Find out the position along the rod at which a weight may be hung to produce equal stress in both wires.

    Home
    Profile