Which of the following can capture body parts in rotating machinery?

Nip points are areas where two rotating parts come together, creating a potential hazard for workers. These points can trap or pinch body parts, leading to serious injuries. Understanding nip points is crucial in safety training because they can be found in various machinery, such as conveyors, rollers, or gears. Proper identification of these hazards allows for the implementation of appropriate safety measures, such as guards or warning labels, to protect workers from potential injuries.

The other options, while related to machinery and safety, do not specifically refer to the danger of capturing body parts. Bending action and transverse motion pertain to the movements and forces involved in machinery operation but do not directly relate to the risk of entrapment. Fixed barrier guards are safety devices designed to prevent access to dangerous areas, but they themselves do not capture body parts; instead, they serve as protective measures against nip points and other hazards. Understanding the specific risks involved with nip points helps ensure that effective safety protocols are established and followed in the workplace.