Math, asked by mydreamnasa, 9 months ago

State and prove the law of conservation of momentum.

( clearly state the meaning of each term stated by you and draw

appropriate diagram )​

Answers

Answered by bibek12102000
0

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Physics

Laws of Motion

Newton's Second Law of Motion

State and prove the law of ...

PHYSICS

State and prove the law of conservation of momentum.

MEDIUM

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ANSWER

Law of conservation of momentum states that total momentum of system remains conserved in the absence of external force.  

Proof:

Consider a body of mass m1  moving with velocity  U1,  striking against another body of mass m2  moving with velocity  U2.

Let the two bodies remain in contact with each other for a small interval "delta t".

Let F12  be the average force exerted by mass m1 on m2, and let F21  be the force on m2 due to m1.

Let v1 and v2 be the velcoities of two bodies after collision.

Momentum of mass m1 before collision=m1u1

Momentum of mass m2 after collision=m2u2

Momentum of mass m1 after collision=m1v1

By using the definition of impulse, change in momentum of mass m1 is,

What would you like to ask?

11th

Physics

Laws of Motion

Newton's Second Law of Motion

State and prove the law of ...

PHYSICS

State and prove the law of conservation of momentum.

MEDIUM

Help best friend

Study later

ANSWER

What would you like to ask?

11th

Physics

Laws of Motion

Newton's Second Law of Motion

State and prove the law of ...

PHYSICS

State and prove the law of conservation of momentum.

MEDIUM

Help best friend

Study later

ANSWER

Law of conservation of momentum states that total momentum of system remains conserved in the absence of external force.  

Proof:

Consider a body of mass m1  moving with velocity  U1,  striking against another body of mass m2  moving with velocity  U2.

Let the two bodies remain in contact with each other for a small interval "delta t".

Let F12  be the average force exerted by mass m1 on m2, and let F21  be the force on m2 due to m1.

Let v1 and v2 be the velcoities of two bodies after collision.

Momentum of mass m1 before collision=m1u1

Momentum of mass m2 after collision=m2u2

Momentum of mass m1 after collision=m1v1

Answered by nprasad1946bly
0

Answer:

m1 u1 + m2 u2 = m1 v1 + m2 v2

Step-by-step explanation:

pbc=pac

m1 u1 + m1 u2 = m1 v1 + m2 v2

dervation of truck :

a1 = (v1 - u1) / t

f1 =m1*a1

f1 = m1 * ( v1 -u1 )/t

derivation of car :

f2 = v2-u2 /t

= m2 * (v2-u2/t)

from 3rd law of motion : we know that to every there is an equal and opposite reaction

f1 =-f2

m1 * (v1 -u1)/t = -m2 ( v2 - u2)/ t

now time (t) can be cancelled from both the sides.

m1v1 -m1u1 = -m2v2 + m2u2

m1v1+m2v2= m1u1 + m2u2

m1u1 +m2u2 = m1v1+m2v2

a= acceleration

t= time

v= final velocity

u= intial velocity

m= mass

f = force

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