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Questions  

ln the figure shown a block of mass m is attached at ends of two springs. The other ends of the spring are fixed. The mass m is released in the vertical plane when the springs are relaxed. The velocity of the block is maximum when

a
k1 is compressed and k2 is elongated
b
k1 is elongated and k2 is compressed
c
k1 and k2 both are compressed
d
k1 and k2 both are elongated.

detailed solution

Correct option is B

Speed of block is maximum at mean position. At mean position upper spring is extended and lower spring is compressed.

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Two springs of spring constants k1 and k2 are joined in series. The effective spring constant of the-combination is given by:


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