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A vertical spring with a spring constant of 390 N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.23- kg block is dropped from rest. It collides with and sticks to the spring, which is compressed by 3.7 cm in bringing the block to a momentary halt. Assuming air resistance is negligible, from what height above the compressed spring was the block dropped? ho - heA horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. The spring and object are compressed by 0.059 m, released from rest, and subsequently oscillate back and forth with an angular frequency of 17.9 rad/s. What is the speed of the object at the instant when the spring is stretched by 0.047 m relative to its unstrained length