Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 5 (Q.No. 4)
4.
If the length of a cantilever carrying an isolated load at its free end is doubled, the deflection of the free end will increase by
Discussion:
15 comments Page 2 of 2.
Anni said:
9 years ago
@Shweta.
I think, your answer is wrong.
I think, your answer is wrong.
Shweta puri said:
9 years ago
Read the question carefully, they are not telling about length they said if the load at the free end is double it mean W = 2W. The deflection of the free end is WL^3/3EI when we put W = 2w it become1/2 which is not given in the answer but the right answer is 1/2.
Ashish Gusain said:
9 years ago
Option B is wrong.
Deflection = Wl.l.l/3EI,
Given that L = 2l,
Then deflection = W.2l.2l.2l/EI,
=> 8x W.l.l.l/3EI.
So option A is right.
Deflection = Wl.l.l/3EI,
Given that L = 2l,
Then deflection = W.2l.2l.2l/EI,
=> 8x W.l.l.l/3EI.
So option A is right.
SUBHRA NANDI said:
10 years ago
No answer is wrong its will be ANS-A (8).
(1)
Shraddha said:
10 years ago
Answer: 8 times.
Deflection at the free end due to point load = Wl*L*L/3EI.
Put 2L in place of L, it becomes 8 times.
Deflection at the free end due to point load = Wl*L*L/3EI.
Put 2L in place of L, it becomes 8 times.
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