Q. A spring and block are in the arrangement of the figure below. When the block is pulled out to x = +2.0 cm, we must apply a force of magnitude 480 N to hold it there. We pull the block to x = +12.5 cm and then release it.
Q. If a mass of 1 kg is accelerated 1 m/s2 by a force of 1 N, what would be the acceleration of 10 kg acted on by a force of 20 N?