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JEE Advanced 2020 Full Test 1 Paper 2

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Question : 2 of 54

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Two springs, each of unstretched length 20cm but having different spring constants K1=1000 N∕m and K2=3000N∕m are attached to two opposite faces of a block of mass m=100g kept on a smooth horizontal surface as shown in the figure. The outer ends of the two springs are now attached to two pins P1&P2 whose locations are shown in the figure, as a result of this, the block acquires a new equilibrium position. The block has been displaced by small amount from its equilibrium position and released to perform simple harmonic motion, then

new equilibrium position is at 35cm from P1 and time period of simple harmonic motion is ‌
π
100
sec
new equilibrium position is at 20cm from P1 and time period of simple harmonic motion is ‌
π
100
sec.
new equilibrium position is at 35cm from P1 and time period of simple harmonic motion is ‌
π
26
sec.
new equilibrium position is at 30cm from P1 and time period of simple harmonic motion is ‌
π
26
sec.

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