Question

A structural steel rod has a radius of 10 mm and length of 1m a hundred kilo Newton force stretches it along it's length find the 1. stress 2. elongation 3.strain​

Answer 1

Answer:

Given that,

Radius r=10mm

Length l=1.0m

Force F=100kN

Young modulus Y=2.0×10

11

Nm

2

Now, the stress is

Stress =

3.14×10

2

m

2

100×10

3

N

=3.18×10

8

Nm

−2

Now, the elongation is

ΔL=

AY

FL

ΔL=

2.0×10

11

3.18×10

8

×1

ΔL=1.59×10

−3

m

ΔL=1.59mm

Now, the strain is

Strain

=

L

ΔL

=

1.0

1.59×10

−3

=1.59×10

−3

Hence, this is the required solution.

Explanation:

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Answer 2

Answer:

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