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Energy Unit Sample Problems: Conservation of Energy (Level 4) 1. The 20kg mass sits on a rough incline with a coefficient of friction of 0.200

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Energy Unit Sample Problems: Conservation of Energy (Level 4) 1. The 20kg mass sits on a rough incline with a coefficient of friction of 0.200 in the system below. If a spring that has a spring constant of 720N/m is attached at equilibrium with the 30kg mass and the ground, calculate the velocity of the blocks when the mass is released after the 20kg mass is pulled 16cm down the incline. 30 ON 30 kg 20 KR 125. 986 294 40

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