A thin cylindrical ring starts from rest at a height h1 = 81 m. The ring has a radius R = 8 cm and a mass M = 4 kg. a)  If the ring rolls (without slipping) all the way to point 2, what is the ring's energy at point 2 in terms of h2 and v2?  b)Given h2 = 35 m, what is the velocity of the ring at point 2 in m/s?  c)What is the ring's rotational velocity in rad/s?

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.