Final answer:
In the standing landmine twist, the correct position is with extended upper limbs at a ninety-degree angle and a wide, lateral stance. This exercise involves principles of torque and rotational motion similar to those explored in physics-based rotational experiments.
Step-by-step explanation:
When performing the standing landmine twist exercise, the athlete should ensure they are in a position similar to option b: The person is standing facing the observer, with upper limbs extended out at a ninety-degree angle from the torso and lower limbs in a wide stance with feet pointing laterally.
The landmine twist is a core exercise that targets the oblique muscles and overall core strength by using a barbell anchored to the ground at one end (landmine setup). To perform this exercise correctly, the athlete should maintain a stable and wide base with the feet, engage the core muscles, and rotate the torso while keeping the arms extended. This exercise can be related to physics principles of torque and rotational motion and further exemplified by at-home experiments that involve rotational movements and balance, such as swinging an object around in a horizontal circle, attempting to balance against a wall, or rotating oneself on a chair.