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23 Nov 2019
How do you find the moment of inertia for a person?
There was a demo where a person stood on a spinning platform (withlittle resistance), and was holding weights. They put their armsout and were spun, and then brought in their arms, which increasedthe velocity of spin. The mass of the person was 55kg, the weightscombined were 5kg.
Height of person was 168 cm
Radius with arms extended: 30 cm
Radius with arms in (center of mass to shoulder): 13 cm
Mass of platform: 10 kg
Period with arms extended: 1.3s,
Period with arms in: 1.1 s
Probably way too much information in here, I just don't know howto begin.
Instructions stated to treat the person as a rigid body, not ageometric shape
How do you find the moment of inertia for a person?
There was a demo where a person stood on a spinning platform (withlittle resistance), and was holding weights. They put their armsout and were spun, and then brought in their arms, which increasedthe velocity of spin. The mass of the person was 55kg, the weightscombined were 5kg.
Height of person was 168 cm
Radius with arms extended: 30 cm
Radius with arms in (center of mass to shoulder): 13 cm
Mass of platform: 10 kg
Period with arms extended: 1.3s,
Period with arms in: 1.1 s
Probably way too much information in here, I just don't know howto begin.
Instructions stated to treat the person as a rigid body, not ageometric shape
Hubert KochLv2
17 Apr 2019
