A block is simply released from the top of an inclined plane as shown in the figure above. The maximum compression in the spring when the block hits the spring is :

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​ w g ​ + w Fr ​ + w s ​ = Δ KE 5 × 10 × 5 − 0.5 × 5 × 10 × x − 2 1 ​ Kx 2 = 0 − 0 250 = 25 x + 50 x 2 2 x 2 + x − 10 = 0 x = 2 ​

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