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Consider a piece of beam of 1 cm in length with one end fixed on a wall and the

ID: 1990136 • Letter: C

Question

Consider a piece of beam of 1 cm in length with one end fixed on
a wall and the other end free (see illustration below). If you bend the beam by
applying a force at the free end that is perpendicular to the beam, it bends by about
0.5 degree.
a. How large is the strain?
b. What is the displacement at the end and in the middle of the
beam?
c. Is the strain at the free end the same as that in the middle of the
beam?
d. Do you expect the beam to get longer if you bend it further but
still elastically?

Explanation / Answer

1*0.5*/180 = 0.0087

0.0087, 0.00435

yes

yes

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