JEE · NEET Previous Year Question
A bullet of mass 10 g moving horizontal with a velocity of strikes a wood block of mass 2 kg which is suspended by light inextensible string of length 5 m. As result, the centre of gravity of the block found to rise a vertical distance of 10 cm. The speed of the bullet after it emerges of horizontally from the block will be [NEET 2016]
Topic: NEET PYQ
Answer: C. Full step-by-step solution below.
- A
- B
- C
- D
Correct answer: C
Solution
(c) According to the law of conservation of momentum,Also velocity of the block just after the collision is
…(ii)
From Eqs. (i) and (ii), we have
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