作业帮Scott Hamilton,a figure skater starts his spin at an initial angular velocityof 1.3 spins (rotations) per second while keeping his arms and legs stretched out.Moments later he pulls his arms and legs inward tightly making himself spin rapidly.Ifwe as
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Scott Hamilton,a figure skater starts his spin at an initial angular velocityof 1.3 spins (rotations) per second while keeping his arms and legs stretched out.Moments later he pulls his arms and legs inward tightly making himself spin rapidly.Ifwe as
Scott Hamilton,a figure skater starts his spin at an initial angular velocity
of 1.3 spins (rotations) per second while keeping his arms and legs stretched out.
Moments later he pulls his arms and legs inward tightly making himself spin rapidly.If
we assume,there is no friction and his initial moment of inertia (rotational inertia) is 6.5
kg m2 and his final moment of inertia is 2.3 kg m2,what is his final angular velocity?
Scott Hamilton,a figure skater starts his spin at an initial angular velocityof 1.3 spins (rotations) per second while keeping his arms and legs stretched out.Moments later he pulls his arms and legs inward tightly making himself spin rapidly.Ifwe as
l1*n1=l2*n2
6,5*1.3=2.3n2
解得：n2=3.67r/s
ω2=2πn2=2*3.14*3.67=23.07rad/s