A block of mass 400 g is initially held a the bottom of an inclined surface against the spring which is compressed 0.2 m. The block is realeased up a surface to a vertical height of h=1.3m. The force constant of the spring is k=500 N/m, the coefficient of friction between the block and the incline is 0.3, and angle of the incline is 25 degrees. Find the speed of the block at the top of the incline.

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