NEET Exam > NEET Questions > A bullet moving horizontally with speed "u", ...
Start Learning for Free
A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)?
Most Upvoted Answer
A bullet moving horizontally with speed "u", strikes a vertically susp...
Given:
- A bullet of mass m moving horizontally with speed u strikes a vertically suspended bob of the same mass.
- The bullet emerges with 80% of its initial speed.
To find:
The initial speed u of the bullet.
Assumptions:
- There is no loss of mass during the collision.
- The bullet and bob are the only objects involved in the collision.
Analysis:
When the bullet strikes the bob, it transfers some of its momentum to the bob. The bullet emerges with 80% of its initial speed, which means it loses some of its initial momentum. According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision.
Step 1: Momentum before the collision:
The momentum before the collision can be calculated using the equation:
Initial momentum = m * u
Step 2: Momentum after the collision:
The bullet emerges with 80% of its initial speed, so its final speed is 0.8u. The momentum after the collision can be calculated as:
Final momentum = m * 0.8u
Step 3: Conservation of momentum:
According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision. Therefore, we can equate the initial momentum to the final momentum:
m * u = m * 0.8u
Step 4: Solving for u:
Simplifying the equation, we get:
u = 0.8u
Dividing both sides by u, we get:
1 = 0.8
Step 5: Conclusion:
Since 1 is not equal to 0.8, there is no solution for u. This means that the given scenario is not physically possible. The bullet cannot emerge with 80% of its initial speed after striking the bob.
- A bullet of mass m moving horizontally with speed u strikes a vertically suspended bob of the same mass.
- The bullet emerges with 80% of its initial speed.
To find:
The initial speed u of the bullet.
Assumptions:
- There is no loss of mass during the collision.
- The bullet and bob are the only objects involved in the collision.
Analysis:
When the bullet strikes the bob, it transfers some of its momentum to the bob. The bullet emerges with 80% of its initial speed, which means it loses some of its initial momentum. According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision.
Step 1: Momentum before the collision:
The momentum before the collision can be calculated using the equation:
Initial momentum = m * u
Step 2: Momentum after the collision:
The bullet emerges with 80% of its initial speed, so its final speed is 0.8u. The momentum after the collision can be calculated as:
Final momentum = m * 0.8u
Step 3: Conservation of momentum:
According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision. Therefore, we can equate the initial momentum to the final momentum:
m * u = m * 0.8u
Step 4: Solving for u:
Simplifying the equation, we get:
u = 0.8u
Dividing both sides by u, we get:
1 = 0.8
Step 5: Conclusion:
Since 1 is not equal to 0.8, there is no solution for u. This means that the given scenario is not physically possible. The bullet cannot emerge with 80% of its initial speed after striking the bob.
Community Answer
A bullet moving horizontally with speed "u", strikes a vertically susp...
200/8
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)?
Question Description
A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)?.
A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)?.
Solutions for A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? defined & explained in the simplest way possible. Besides giving the explanation of
A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)?, a detailed solution for A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? has been provided alongside types of A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? theory, EduRev gives you an
ample number of questions to practice A bullet moving horizontally with speed "u", strikes a vertically suspended Bob of same Maas and emerges with 80percentage of initial speed. The maximum height attained by Bob is 20metre, then "u" is equal to( assume there is no loss of Maas)? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup