洋モノ
5分17秒
Kink Academy
Self Suspension: Vector Forces
It’s time to try SCIENCE! Rather than just teach ties by rote, Shay wants to be sure you understand the of what she’s teaching. Many of the harnesses and upline techniques exist because of the way that the angle of the rope that’s holding you up changes the pressure on your body. “Vector forces” is a quick physics explanation of how gravity and the rope can make even a 25lb backpack weigh a lot more…
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StashDB 2026-10-05
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