A cantilever of steel fixed horizontally is subjected to a load of 225gm at its free end.The geometric moment of inertia of the cantilever is 4.5×10^-11m^4.If the length of cantilever and yougs modulus of steel are 1m and 200×10^9pa respectively.calculate the depression at the loaded end.
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Length of cantilever, L=50cm=0.5m
Deflection at the end w(L)=15mm
Find: Deflection w(x) at 30cm from rigid end.
Depression at a point in a cantilever beam with load at one end is given by,w(x)=
6EI
Px
2
(3L−x)
We have,
w(L)
w(x)
=
3EI
PL
3
6EI
Px
2
(3L−x)
w(0.5m)
w(0.3m)
=
3EI
P(0.5)
3
6EI
P(0.3)
2
(3(0.5)−0.3)
This gives, w(0.3m)=6.48mm
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