Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 5 (Q.No. 42)
42.
The coefficient of restitution for inelastic bodies is
Discussion:
14 comments Page 1 of 2.
Rajesh Kumar said:
3 years ago
For perfectly elastic collision, e = 1.
For inelastic collision, (0 < e < 1).
For a perfectly inelastic collision, e = 0.
For inelastic collision, (0 < e < 1).
For a perfectly inelastic collision, e = 0.
Kathan said:
5 years ago
C is the correct answer.
Kundan kr said:
5 years ago
Yes, the answer should be C.
Battini Mouly said:
6 years ago
e is zero for perfectly plastic.
e is one for elastic bodies.
e is less than one for inelastic bodies.
Option C is correct.
e is one for elastic bodies.
e is less than one for inelastic bodies.
Option C is correct.
Joe said:
6 years ago
e is usually a positive, real number between 0 and 1.
e = 0: This is a perfectly inelastic collision. This means kinetic energy along the common normal is 0. Kinetic energy is converted to heat or work done in deforming the objects.
0 < e < 1: This is a real-world inelastic collision, in which some kinetic energy is dissipated.
e = 1: This is a perfectly elastic collision, in which no kinetic energy is dissipated, and the objects rebound from one another with the same relative speed with which they approached.
Option C is correct here because no where PERFECTLY is mentioned.
e = 0: This is a perfectly inelastic collision. This means kinetic energy along the common normal is 0. Kinetic energy is converted to heat or work done in deforming the objects.
0 < e < 1: This is a real-world inelastic collision, in which some kinetic energy is dissipated.
e = 1: This is a perfectly elastic collision, in which no kinetic energy is dissipated, and the objects rebound from one another with the same relative speed with which they approached.
Option C is correct here because no where PERFECTLY is mentioned.
Anomie said:
6 years ago
Perfectly inelastic body COR is 0.
Rajkotha said:
6 years ago
Elastic between 0 and 1.
Inelastic 0.
Perfect elastic 1.
Inelastic 0.
Perfect elastic 1.
Ravi said:
7 years ago
Here, e is usually a positive, real number between 0 and 1:
e = 0: This is a perfectly inelastic collision. The objects do not move apart after the collision, but instead they coalesce. Kinetic energy is converted to heat or work done in deforming the objects.
0 < e < 1: This is a real-world inelastic collision, in which some kinetic energy is dissipated.
e = 1: This is a perfectly elastic collision, in which no kinetic energy is dissipated, and the objects rebound from one another with the same relative speed with which they approached.
so answer is 0 to 1.
e = 0: This is a perfectly inelastic collision. The objects do not move apart after the collision, but instead they coalesce. Kinetic energy is converted to heat or work done in deforming the objects.
0 < e < 1: This is a real-world inelastic collision, in which some kinetic energy is dissipated.
e = 1: This is a perfectly elastic collision, in which no kinetic energy is dissipated, and the objects rebound from one another with the same relative speed with which they approached.
so answer is 0 to 1.
SANGPPA R DASAR said:
8 years ago
The option is correct. The coefficient of restitution of perfectly inelastic body is ZERO. The coefficient of restitution of perfectly elastic body is ONE.
SOHEL said:
8 years ago
The coefficient of restitution (COR) is the ratio of the final to initial relative velocity between two objects after they collide. It normally ranges from 0 to 1 where 1 would be a perfectly elastic collision.
A perfectly inelastic collision has a coefficient of 0, but a 0 value does not have to be perfectly inelastic.
A perfectly inelastic collision has a coefficient of 0, but a 0 value does not have to be perfectly inelastic.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers