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23 Nov 2019
the string in a yo-yo is wound around an axle of radius 0.470 cm.The yo-yo has both rotational and translational motion, like arolling object, and has mass 0.185 kg and outer radius 1.90 cm.starting from rest, it rotates and falls a distance of 1.18 m (thelength of the string). assume for simplicity that the yo-yo is auniform circular disk and that the string is thin compared to theradius of the axle.
a.) What is the speed of the yo-yo when it reaches the distance of1.18 m?
answer is in m/s.
i'm lost on how the translational and rotational energies arerelated, but the yo-yo is not rolling on its outer radius.
the string in a yo-yo is wound around an axle of radius 0.470 cm.The yo-yo has both rotational and translational motion, like arolling object, and has mass 0.185 kg and outer radius 1.90 cm.starting from rest, it rotates and falls a distance of 1.18 m (thelength of the string). assume for simplicity that the yo-yo is auniform circular disk and that the string is thin compared to theradius of the axle.
a.) What is the speed of the yo-yo when it reaches the distance of1.18 m?
answer is in m/s.
i'm lost on how the translational and rotational energies arerelated, but the yo-yo is not rolling on its outer radius.
Sixta KovacekLv2
29 Jan 2019
