Final answer:
The danger of releasing a compressed coil spring without a jack stand is bodily injury due to the rapid expansion and force of the spring. It is important to use proper safety precautions, such as a jack stand, to securely hold the spring in place and prevent any potential accidents or injuries.
Step-by-step explanation:
When releasing a compressed coil spring without a jack stand in place, the danger is primarily bodily injury. The stored potential energy in the compressed spring can cause it to rapidly expand, potentially leading to the spring shooting out uncontrollably.
This can result in the spring hitting someone or causing damage to nearby objects. The force of the expanding spring can cause serious harm, including cuts, bruises, and even broken bones. It is important to use proper safety precautions, such as a jack stand, to securely hold the spring in place and prevent any potential accidents or injuries.