explain how much energy will be released if a 500 gm weighed hammer fall from 5 meter height, and if any person with helmet what will be the impact and injury level and without helmet.
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Let's analyze the energy released when a 500 gram hammer falls from a height of 5 meters. We'll also examine the potential impact and injury levels on a person, comparing scenarios with and without a protective helmet.
To calculate the energy released, we use the potential energy formula: PE equals mass times gravity times height. With our values of 0.5 kilograms, 9.8 meters per second squared, and 5 meters, we get 24.5 Joules of energy that will be released upon impact.
Without a helmet, the 24.5 Joules of energy transfers directly to the skull and brain. The impact creates high peak forces concentrated on a small area with very short stopping time. This can easily exceed the tolerance of skull and brain tissue, potentially causing skull fractures, concussion, brain trauma, or internal bleeding.
With a helmet, the impact energy is managed through three key mechanisms. The crushable foam liner absorbs a significant portion of the 24.5 Joules. The hard outer shell distributes the force over a larger area, and the helmet increases the stopping time, dramatically reducing the peak force transmitted to the skull and brain.
In conclusion, a 500 gram hammer falling from 5 meters releases 24.5 Joules of energy. Without a helmet, this energy can cause severe injuries including skull fractures and brain trauma. However, with proper helmet protection, the risk is dramatically reduced through energy absorption and force distribution. The evidence is clear: helmets save lives and prevent serious injuries.