Problem 19: sig.gif?tid=2N74-D1-D6-44-AC90-13475 An ice skater is spinning at 6.2 rev/s and has a moment of inertia of 0.36 kg ⋅ m2.
Problem 19: 
An ice skater is spinning at 6.2 rev/s and has a moment of inertia of 0.36 kg ⋅ m2.
Part (a) Calculate the angular momentum, in kilogram meters squared per second, of the ice skater spinning at 6.2 rev/s.
Part (b) He reduces his rate of rotation by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kilogram meters squared) if his rate of rotation decreases to 0.75 rev/s.
Part (c) Suppose instead he keeps his arms in and allows friction of the ice to slow him to 2.75 rev/s. What is the magnitude of the average torque that was exerted, in N ⋅ m, if this takes 19 s?
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Problem 19: sig.gif?tid=2N74-D1-D6-44-AC90-13475 An ice skater is spinning at 6.2 rev/s and has a moment of inertia of 0.36 kg ⋅ m2.
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An ice skater is spinning at 6.2 rev/s and has a moment of
inertia of 0.56 kg•m^2. He reduces his rate of rotation by
extending his arms and increasing his moment of inertia. Find the
value of his moment of inertia (in kilogram meters squared) if his
rate of rotation decreases to 1.75 rev/s.
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spinning at 6.00 rev/s given his moment of inertia is 0.330 kg ·
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