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The diameter of a brass rod is 4 mm and ...

The diameter of a brass rod is 4 mm and Young's modulus of brass is `9 xx 10^(10) N//m^(2)`. The force required to stretch by 0.1 % of its length is

A

`360 piN`

B

`36 N`

C

`144 pi xx 10^(3)N`

D

`36 pi xx 10^(5)N`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The diameter of a brass rod is 4 mm and Young's modulus of brass is 9xx10^(10)" N/m"^(2) . The force required to stretch by 0.1% of its length

    A
    `360 piN`
    B
    36 N
    C
    `144pixx10^(3)N`
    D
    `36 pixx10^(5)N`

  • The area of a cross-section of steel wire is 0.1 cm^(-2) and Young's modulus of steel is 2 x 10^(11) N m^(-2) . The force required to stretch by 0.1% of its length is

    A
    1000 N
    B
    2000 N
    C
    4000 N
    D
    5000N

  • The area of a cross section of steel wire is 0.1cm^2 and Young's modulus of steel is 2xx10^(11)Nm^-2 . The force required to strech by 0.1% of its length is

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