Rigid body dynamics

JEE Advanced 2015 Answers › Mechanics questions › Rigid body dynamics

A solid cylinder of mass M=1kg and radius R=0.5m is pivoted at its centre and has three particles of mass m=0.1 kg mounted at its perimeter as shown in figure.The system is originally at rest.Find the angular speed of the cylinder,when it has swung through 90 degree in anticlockwise direction.

#Physics #Mechanics

UP 0 DOWN 0 0 2
Post on FacebookPost anonymously?

2 Answers

1

Sonne ·2010-06-11 02:22:08

this is easy

use energy conservation for the system
i.e

12I_sysÏ‰²=m_netgÎ”h_cm

u shud then get the answer

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Sonne ·2010-06-11 02:32:36

I_{net}=\frac{0.25}{2}+0.3*0.25=0.2

0.1\omega^2=1.3*0.39\\ \omega=2.23

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