In the figure given below, a block of mass M = 490 g placed on a frictionless table is connected with two springs having same spring constant (K=2Nm -1 ). If the block is horizontally displaced through 'X'm then the number of complete oscillations it will make in 14n seconds will be________
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(20)
Keff = K + K as both springs are in use in parallel
= 2k = 2x2 = 4N/m
m = 490gm = 0.49 kg
No. of oscillation in the 
is
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