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NEET 2020 Model Question Paper 1

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Question : 10

Total: 180

A ring of mass m is attached to a horizontal spring of spring constant k and natural length l0 . Other end of spring is fixed and ring can slide on a smooth horizontal rod as shown. Now the ring is shifted to position B and released, speed of ring when spring attains it's natural length is :-

2l0
3
√
k
m
l0
3
√
k
m
3l0
2
√
k
m
l0√
k
m

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