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Question

A 50 g bullet pierces through a plate of mass M1 = 1 kg and then comes to rest inside a second plate of mass M2 = 2.95 kg as shown in figure. It is found that the two plates, initially at rest, now move with equal velocities. Find the percentage loss in the initial velocity of bullet when it is between M1 and M2. (Neglect any loss of material of the plates due to the action of the bullet.)

50 g की एक गोली द्रव्यमान M1 = 1 kg की प्लेट में छेद करते हुए इससे गुजरती है तथा फिर चित्रानुसार द्रव्यमान M2 = 2.95 kg की द्वितीय प्लेट के अंदर विराम में आती है। यह पाया जाता है कि प्रारम्भ में विराम में स्थित दोनों प्लेटें अब समान वेगों से गति करती हैं। जब गोली M1M2 के मध्य हैं, तब गोली के प्रारम्भिक वेग में प्रतिशत हानि ज्ञात कीजिए। (गोली की क्रिया के कारण प्लेटों के पदार्थ में किसी भी हानि को नगण्य मानिए।)

A
50%
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B
25%
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C
75%
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D
20%
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Solution

The correct option is B 25%
Solution

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