A 2kg object attached to a spring moves without friction and is driven by an external force, given by . Force constant of the spring is 20 N/m. Amplitude of motion and time period of oscilation respectively are
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a
7.09 cm , 1 sec
b
5.09 cm , 1 sec
c
7.09 cm , 2 sec
d
5.09 cm , 2 sec
answer is B.
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Detailed Solution
, Here b = 0. Motion takes place with angular frequency of driving force