Free end of an ideal spring of spring co...

Free end of an ideal spring of spring constant 100 N/m is at a distance 1 m from a vertical block of mass 2 kg moving on rough surface with initial speed 8 m/s as shown in figure. If coefficient of friction is 0.7, then maximum compression in spring is `(g = 10 ms^-2)`

1 m

0.5 m

0.75 m

0.25 m

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