Final answer:
Fall arrest forces, such as energy absorption, fall distance control, force limitation, and deceleration, are used to prevent the injury threshold of the human body from being exceeded.
Step-by-step explanation:
The subject of this question is Physics.
When it comes to fall arrest forces, there are several factors that can help prevent injury to the human body:
- Energy absorption: This involves using materials or mechanisms that can absorb and dissipate the energy generated during a fall. For example, airbags in cars or harnesses with built-in shock absorbers can help reduce the impact force on the body.
- Fall distance control: By controlling the distance a person falls, the force of impact can be reduced. This can be achieved through the use of safety devices like safety nets, lanyards, or self-retracting lifelines.
- Force limitation: This refers to limiting the amount of force exerted on the body during a fall. Equipment like harnesses and lanyards are designed to have a maximum force limit to prevent excessive force on the body.
- Deceleration: Slowing down the rate at which a person comes to a stop after a fall can also help reduce the force exerted on the body. This can be achieved through the use of devices like energy-absorbing lanyards or deceleration devices.