Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 3)
3.
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity
Discussion:
70 comments Page 4 of 7.
Rahul said:
8 years ago
Aman is right but in question given that after collision both balls move with the same velocity then use that concept in momentum eq;
mv = mv1+mv1,
so v1=v/2.
mv = mv1+mv1,
so v1=v/2.
(1)
RAJA TMS said:
1 decade ago
We know that total momentum remains constant i.e., m1*v1=m2*v2 given that mass is constant m1=m2 then v1=v2 so the 1st ball gives half of its velocity to 2nd.
K. srinivasan said:
1 decade ago
We know,
Momentum before collision is equal to momentum after collision for that,
mv + m(0) = mv' + mv'.
mv = m(2v').
So velocity after impact v' = v/2.
Momentum before collision is equal to momentum after collision for that,
mv + m(0) = mv' + mv'.
mv = m(2v').
So velocity after impact v' = v/2.
Ravan said:
7 years ago
@ALL.
As per my knowledge, after the collision, both balls are moving with some velocity so that the velocity of balls after the collision is v/2.
As per my knowledge, after the collision, both balls are moving with some velocity so that the velocity of balls after the collision is v/2.
(1)
Satish said:
1 decade ago
From conservation of momentum.
Momentum before impact = momentum after impact.
mv+m*0 = mv1+mv1 { after impact v1=v2}.
Hence,
v1 = v/2.
Momentum before impact = momentum after impact.
mv+m*0 = mv1+mv1 { after impact v1=v2}.
Hence,
v1 = v/2.
Sk Yadav said:
8 years ago
If the second mass it at rest initially. After collision 1st mass gets rest second mass move with a velocity ' V'. NOT By both ' V/2'.
Ravi said:
9 years ago
According to the conservation of momentum.
The 1st ball will come to rest and the second ball will move with a velocity V.
The 1st ball will come to rest and the second ball will move with a velocity V.
Aditya said:
1 decade ago
The body transfer the whole energy to second body because e=1. So first body comes to rest. Another one moves velocity v.
Saurabh said:
1 decade ago
One of the body which was moving initially with velocity V would come to rest and second body will move with velocity v.
Kedar gupta said:
1 decade ago
After collision the second body will move by velocity 'v' because first body will remain rest and second will move.
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