IIT-JEE-Physics-Paper 2 -2008-Solution

18. w = √(4K/3M) 

Correct choice: (D) 

19.  
 

On solving above equations we get, kxmax = 3/2 μMg …… (i) 

Applying conservation of mechanical energy 

1/2 MV₀² + 1/2 (1/2 MR² ) (V₀/R)² = 1/2 (1/2 kx_max² ) …… (ii) 

Solving (i) and (ii) we get V₀ = μg √(3M/K) 

Correct choice: (C) 

20. (A—p); (B—q,s); (C—s); (D—q) 

21. (A—p, q, r, s); (B—q); (C—p, q, r, s); (D—p, q, r, s) 

22. (A—q); (B—p, r); (C—p, s); (D—q, s) 

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