Physics, 15.04.2020 01:12 minmacurafinaa

A 0.42-kg block is attached to the end of a horizontal ideal spring and rests on a frictionless surface. The block is pulled so that the spring stretches for 2.1 cm relative to its unstrained length. When the block is released, it moves with an acceleration of 9.0 m/s2. What is the spring constant of the spring?

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A 0.42-kg block is attached to the end of a horizontal ideal spring and rests on a frictionless surf...