A metal hoop of mass 25 kg and with a radius of 05 m rolls, Ask an Expert

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A metal hoop of mass 2.5 kg and with a radius of 0.5 m rolls smoothly without slipping along a floor with a velocity of 2 m/s. It then encounters a ramp and rolls up the ramp to some maximum height before stopping.

(a) After consulting the formula sheet provided with this exam write down the relevant formula for the rotational moment of inertia of this metal hoop.

(b) While it is rolling horizontally, before encountering the ramp, what is the total kinetic energy of the metal hoop?

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