find frequency of vibration...!!!

IIT JEE 2015 Preparation › Mechanics questions › find frequency of vibration...!!!

solve Question no. 3...

The spring attached to d vertex B has spring constant = K₁ and the other one has K₂ ... also, in all d four options, K₂ follows K₁...

#Physics #Mechanics

UP 0 DOWN 0 0 5
Post on FacebookPost anonymously?

5 Answers

62

Lokesh Verma ·2009-03-24 05:01:15

wow..

try energy method MAK..

first see a small displacement in theta...

then write the energy

differentiate that :)

You are done..

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

The Scorpion ·2009-03-24 05:27:29

need some more push... dun mind, i'm a li'l dumb in such problems... [2]

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

skygirl ·2009-03-24 06:02:26

ans shud be A..

achhe se solve ni kii...

but a trick ...

the freq of the frame in absence of springs wud have been only gue to gravitation

dat wud have been : 1/2pi√g/ (lâˆš3/2)

this term is only there in A...

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

skygirl ·2009-03-24 06:17:40

hey bad trick this one..........

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

The Scorpion ·2009-03-24 18:55:52

yuppie... got it bhaiya... [1]

Actually got dis one in fiitjee solutions... but it tuk tym to understand, as i'm li'l weak in this area... [2]

but finally got it... [4]

UP 0 DOWN 0
Post on FacebookPost anonymously?

Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω