Question

3: If vibrational energy of damped vibration is E, at
amplitude x1 and Ez at amplitude x2
And is logarithmic decrement then what will be the value of
(Ez-EY)/E?
2889554030
d
2d
3d
d/2​

Answer 1

Answer:

Logarithmic decrement, {\displaystyle \delta }\delta , is used to find the damping ratio of an underdamped system in the time domain.

The method of logarithmic decrement becomes less and less precise as the damping ratio increases past about 0.5; it does not apply at all for a damping ratio greater than 1.0 because the system is overdamped.

Answer 2

Answer:

Answer: c

Answer: cExplanation: When no external force acts on the body, after giving it an initial displacement, then the body is said to be under free or natural vibrations. The frequency of the free vibrations is called free or natural frequency.

Answer: cExplanation: When no external force acts on the body, after giving it an initial displacement, then the body is said to be under free or natural vibrations. The frequency of the free vibrations is called free or natural frequency.When there is a reduction in amplitude over every cycle of vibration, the motion is said to be damped vibration.