A large block of wood of mass M=5.99 kg is hanging from two long massless cords. A bullet of mass m = 10 g is fired into the block and gets embedded in it. The (block + bullet) then swing upwards, their Centre of mass rising a vertical distance h = 9.8 cm before the (block + bullet) pendulum comes momentarily to restate the end of its arc. The speed of the bullet just before collision is:(Take: 
)
Text Solution
Verified by ExpertsC
JEE Main 2021
From energy conservation,
[ 
is velocity after collision]
Applying momentum conservation, (just before and just after collision)
m/s
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