1.

A block of mass mass suspended by a rubber cord of natural lengthl = (mg)/Kwhere K is force constant of the cord. The block is lifted upward so that the cord becomes just tight and then block is released suddenly:

Answer»

Block performs PERIODIC motion with amplitude greater than L. 
Block performs SHM with amplitude EQUAL to 1. 
Block will never return to the position from where it was released. 
Angular FREQUENCY, u=1 rad/sec.

Answer :D


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