engineering recuitment HAL Management & Design Trainee Mock Test 2023 Mechanical Vibrations Damped Free Vibration Logarithmic Decrement
In under-damped vibrating system, if x1 and x2 are successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to
1
log(x2 + x1)
2
log(x2/x1)
3
log(x2 - x1)
4
log(x1/x2)