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Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 2 (Q.No. 31)
Engineering Mechanics
31.
Which of the following statement is correct?
The kinetic energy of a body during impact remains constant.
The kinetic energy of a body before impact is equal to the kinetic energy of a body after impact.
The kinetic energy of a body before impact is less than the kinetic energy of a body after impact.
The kinetic energy of a body before impact is more than the kinetic energy of a body after impact.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 2 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.
(1)
Vasantharaj M J said:   6 years ago
Is it for elastic, inelastic, plastic or real case? Please tell me.
Ramji verma said:   6 years ago
When condition is not given then we assume that condition is ideal.
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