Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 2 (Q.No. 31)
31.
Which of the following statement is correct?
Discussion:
13 comments Page 1 of 2.
Scientist sakthivel said:
8 years ago
For perfect elastic body, loss of K.E iske1=ke2
And perfectly plastic impact K.E=(ke1-ke2)
Energy can't be negative.
So K.E1 is greater than KE2.
And perfectly plastic impact K.E=(ke1-ke2)
Energy can't be negative.
So K.E1 is greater than KE2.
(1)
JOHN said:
1 decade ago
My knowledge is that every object at rest posses a potential energy. In addition to this, I just wonder how possible it may be for a body that a body that just had a collision posses lesser energy when at its initial kinetic energy before collision.
Chetan patel said:
1 decade ago
Loss of KE. Takes place during impact so KE. Before impact is more than KE after impact.
Paresh said:
1 decade ago
If losses are considered then D is the answer,
But if the collision is perfectly elastic then B is correct as per conservation of energy.
But if the collision is perfectly elastic then B is correct as per conservation of energy.
Akash said:
9 years ago
I think C is the correct answer.
Amit said:
9 years ago
According to me, The correct answer will be B or D.
Vaishali said:
8 years ago
Here, it is not said the body is elastic hence answer is d.
Raushan kumar said:
8 years ago
It is not cleared that what types of collision occur. Hence answer should be a, b & d depending on types of collision.
Ranjan said:
8 years ago
Yes, you are right @Paresh.
Montu said:
8 years ago
I think after impact the stress induced in the body was more so it will directly affect the energy consumption rate and also change in moment of area.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers