A metal rod measures 0.357m.Estimate the length of metal needed to make
6 of these rods.
Please give 1 answer.
A.
about 2.1 m
Answers
Answered by
2
Answer:
L
1
=50cm
L
2
=50.06cm
△L=0.06cm
T
1
=20℃
T
2
=95℃
△T=75℃
Putting value in (1) to find coefficient of Linear expansion
α=
(50)(75)
0.06
α=16×10
−6
℃
−1
Now, temperature at 0
o
C
Length at 0
o
C=L
3
L
3
=L
2
(1+α△T)
△T=0−20℃
△T=−20℃
L
3
=50[1+16×10
−6
×(−20)]
L
3
=49.984cm
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