Rotational Mechanics

VITEEE 2015 Answers › Mechanics questions › Rotational Mechanics

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6 Answers

1161

Akash Anand ·2013-12-28 03:15:54

@Aditya: We were doing a silly mistake, this question is awesome. :)

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481

Anurag Ghosh ·2013-12-28 03:58:09

Sir mera âˆš3v/2R aa rha hai.....

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865

Soumyadeep Basu ·2013-12-28 06:24:59

Is the answer (A) V4R?

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1133

Sourish Ghosh ·2013-12-29 02:35:53

I'm getting V3R

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1133

Sourish Ghosh ·2013-12-29 02:52:18

Reference point: where the bullet strikes.

Conserving linear momentum,
mv = (m+m)u
=> u = v2
After collision, COM = R/2
I_com = (mR² + mR²4) + mR²4 = 32mR²

Conserving angular momentum, (taking "into-the-plane" as -ve)

0 = -(2m)uR2 + I_comw
=> w = v3R

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Akash Anand Excellent work :)
Upvote·0· Reply ·2013-12-30 05:11:15
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865

Soumyadeep Basu ·2013-12-29 06:15:47

Yes, it will be V3R. I was making a mistake.

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

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

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° ∂ ∞ 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