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The following four objects (each of mass m) roll without slipping down a ramp of height...

The following four objects (each of mass m) roll without slipping down a ramp of height h:

Object 1: solid cylinder of radius r

Object 2: solid cylinder of radius 2r

Object 3: hoop of radius r

Object 4: solid sphere of radius 2r

Rank these four objects on the basis of their rotational kinetic energy at the bottom of the ramp.

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