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Q. A 48 kg mass attached to a spring oscillates with amplitude of 2.2 m. The total mechanical energy of the system is 380 J. Find the position of the mass when its speed is 2m/s. newtons.

Q. A 8 kg box slides d = 4.2m down the frictionless ramp, after that collides with a spring whose spring constant is 250 N/m. angle is 30 degrees.

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