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Q. A 12.00 kg block on a horizontal frictionless surface is attached to a light spring (force constant = 0.80 kN/m). The block is originally at rest at its equilibrium position when a force (magnitude P = 80 N) acting parallel to surface is applied to the block. What is the speed of the block when it is 13cm from its equilibrium position?

Q. A solid cylindrical disk has a radius of 0.10m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 50-N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an angular acceleration of 150rad/s2. What is the mass of the disk?

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