Effects of inertia tensor on perceived heaviness of lifted objects.

点击翻译按钮获取中文摘要

Effects of inertia tensor or rotational dynamics of lifted objects on perceived heaviness were investigated. Inertia tensor is known to be affected by a distance between the point of action on the human fingers and the center of gravity of a lifted object and by a mass distribution of the lifted object. Thus, using cubes with the same mass but different sizes (3 levels) --- attached with rods with the different length (3 levels), the effects of distance (experiment 1) and size by distance (experiment 2) on perceived heaviness when subjects compared among these cubes. Experiment 1 indicated that perceived heaviness significantly increased with a distance and vice versa (p < .05). Experiment 2 indicated that perceived heaviness significantly increased when increase in distance and decrease in size occurred simultaneously and vice versa. However, perceived heaviness complexly changed once this antagonistic relationship was broken, which was discussed using a quantitative model.