The moment of inertia depends on both the mass of the object and the distribution of this mass around the axis of rotation. For this reason, figure skaters often pull their arms in during a turn in order to decrease their moment of inertia and increase their speed.
Showing posts with label Ice Skating. Show all posts
Showing posts with label Ice Skating. Show all posts
Tuesday, January 29, 2013
Moment of Inertia (cont)
The moment of inertia depends on both the mass of the object and the distribution of this mass around the axis of rotation. For this reason, figure skaters often pull their arms in during a turn in order to decrease their moment of inertia and increase their speed.
Monday, January 21, 2013
Skating on Ice
Torque is what allows a figure skater to skate on ice. A skater pushes one of his/her feet against the ice in order to exert a torque on his/her body and thereby initiates a spin.
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