Question

A steel wire 1 m long and cross-sectional area 5 x 10-5 is stretched through 1mm by a force of 10,000N. Find the young’s modulus of the wire​

Answer 1

Answer:

Y=

A△l

Fl

Y=

10

−6

×10

−3

200×1

Y=2×10

11

△l=1002−1000=2cm,l=10m

F=

l

YA△l

=

10

2×10

11

×10

−6

×2×10

−2

=400N

Explanation:

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