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Physics Part-I

Laws of motion

A nucleus is at rest in the laboratory frame of reference. Sho

Physics Part-I

Class 11

NCERT

Chapter 1: Physical World

16 questions

Chapter 2: Units and Measurements

51 questions

Chapter 3: Motion in Straight Line

50 questions

Chapter 4: Motion in a Plane

43 questions

Chapter 5: Laws of motion

52 questions

Two masses

8

k g

and

k g

k g

are connected at the two ends of a light inextensible string that goes over a frictionless pulley. Find the acceleration of the masses, and the tension in the string when the masses are released.

A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

Two billiard balls each of mass

0.05 k g

moving in opposite directions with speed

6 m s^{- 1}

collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?

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Chapter 6: Work, Energy and Power

41 questions

Chapter 7: System of Particles and Rotational Motion

45 questions

Chapter 8: Gravitation

33 questions

Question

Easy

Solving time: 2 mins

A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

Name: Video solution 1: [Solved] A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions. - Physics Part-I
Uploaded: 2022-10-09T05:34:01.000Z
Duration: 6 min
Description: Video solution 1: [Solved] A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions. - Physics Part-I

Views: 5,683 students

Updated on: Oct 9, 2022

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Physics Part-I (NCERT)

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A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

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Text solutionVerified

Let

m

masses of the parent nucleus and

m_{1}

and

m_{2}

be the respective two daughter nuclei. The parent nucleus is at rest.Initial momentum of the system (parent nucleus)

= 0

Let

v_{1}

and

v_{2}

be the respective velocities of the daughter nuclei having masses

m_{1}

and

m_{2}

.
According to the law of conservation of momentum: Total initial momentum= Total final momentum

0 = m_{1} v_{1} + m_{2} v_{2}

v_{1} = \frac{- m _{2} v _{2}}{m _{1}}

Here, the negative sign indicates that the fragments of the parent nucleus move in directions opposite to each other.

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Practice more questions from Physics Part-I (NCERT)

Two masses

8

k g

and

k g

k g

are connected at the two ends of a light inextensible string that goes over a frictionless pulley. Find the acceleration of the masses, and the tension in the string when the masses are released.

A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

Two billiard balls each of mass

0.05 k g

moving in opposite directions with speed

6 m s^{- 1}

collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?

View all

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Question Text	A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.
Updated On	Oct 9, 2022
Topic	Laws of motion
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 1
Upvotes	107
Avg. Video Duration	6 min

A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

Text solutionVerified

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A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

Text solutionVerified

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