Posted by **Meder** on Saturday, March 2, 2013 at 12:57pm.

Alpengeist, in Williamsburg, Virginia, promises the world’s largest inverted (upside-down) loop, with a diameter of

106 feet (32.3 m).

(i) What is the minimum safe speed while inverted?

(ii) If the actual speed is 52.0 mph while inverted(23.25 m/s), then what is the contact force on a 60 kg inverted

person?

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