One end of a horizontal spring with force constant 76.0
Chapter 6, Problem 6.78(choose chapter or problem)
One end of a horizontal spring with force constant 76.0 N>m is attached to a vertical post. A 2.00-kg block of frictionless ice is attached to the other end and rests on the floor. The spring is initially neither stretched nor compressed. A constant horizontal force of 54.0 N is then applied to the block, in the direction away from the post. (a) What is the speed of the block when the spring is stretched 0.400 m? (b) At that instant, what are the magnitude and direction of the acceleration of the block?
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