Two blocks P and Q of masses 0.3 kg and 0.4 kg respectively are stuck to each other by some weak glue as shown in the figure. They hang together at the end of a spring with a spring constant k = 200 N/m. The block Q suddenly falls free due to failure of glue, then find maximum kinetic energy of the block P during subsequent motion in mJ.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(40)
Sol. A = 
= 2 cm motion starts from lower extreme
KE max = 
mꞷ 2 A 2 = 
× 0.3 × 
A 2 = 
× 0.3 × 
× 
= 0.04 J
= 40 mJ
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