A 20 g bullet collides with a 1 980 g block, resting on a perfectly polished surface of a table, and attached to an elastic coil spring, fixed to a wall, as shown in the figure. After the shock, the bullet remains embedded in the block, compressing the spring 20 cm. If it is known that a force of 105 dynes is necessary to compress the spring by 2 cm, and given that said spring has its natural length before the shock. What will be the maximum elastic potential energy stored by the spring? M

A 20 g bullet collides with a 1 980 g block, resting on a perfectly polished surface of a table, and attached to an elastic coil spring, fixed to a wall, as shown in the figure. After the shock, the bullet remains embedded in the block, compressing the spring 20 cm. If it is known that a force of 105 dynes is necessary to compress the spring by 2 cm, and given that said spring has its natural length before the shock. What will be the maximum elastic potential energy stored by the spring? M