1.what is damped oscillation . 2.define epoch. 3.give newton's formula for speed of sound and explain Laplace correction . A block of mass 12kg is supported by identical springs .when the block is pressed down it executes SHM . with the time period if 1.5 s . find force constant of each spring . if a block of mass M is placed on the block the period of SHM. changes to 3 s .find the mass of the block.

Asked by Subiya Khan | 11th Oct, 2013, 11:10: AM

Expert Answer:

1.  It is the type of oscillation in which the amplitude of the oscillating body decreases with time due to damping forces like air drag and frictional force.

Example: The oscillation of a simple pendulum in air is a damped one. The pendulum stops oscillating after some time.

 

2. 

An epoch refers to the displacement acquired by an oscillating body when the time is, t =0.

It is thus measured in standard length units of m or cm.

 

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Answered by Faiza Lambe | 11th Oct, 2013, 01:16: PM

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