Question

A figure skater can increase her spin rotation rate from an initial rate of 1.0 rev...

A figure skater can increase her spin rotation rate from an initial rate of 1.0 rev every 2.0 s to a final rate of 3.5 rev/s

A) If her initial moment of inertia was 4.4 kg⋅m2 , what is her final moment of inertia?

Express your answer using three significant figures and include the appropriate units.

B) How does she physically accomplish this change?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Problem 8.65 A figure skater can increase her spin rotation rate from an initial rate of...
Problem 8.65 A figure skater can increase her spin rotation rate from an initial rate of 1.0 rev every 2.0 s to a final rate of 3.0 rev/s . If her initial moment of inertia was 4.3 kg⋅m2 , what is her final moment of inertia? How does she physically accomplish this change?
The outstretched hands and arms of a figure skater preparing for a spin can be considered...
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center (Figure 1). When his hands and arms are brought in and wrapped around his body to execute the spin, the hands and arms can be considered a thin-walled hollow cylinder. His hands and arms have a combined mass 8.0 kg . When outstretched, they span 1.7 m ; when wrapped, they form a thin-walled...
The outstretched hands and arms of a figure skater preparing for a spin can be considered...
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center (Figure 1). When his hands and arms are brought in and wrapped around his body to execute the spin, the hands and arms can be considered a thin-walled hollow cylinder. His hands and arms have a combined mass 9.0 kg . When outstretched, they span 1.6 m ; when wrapped, they form a cylinder...
The outstretched hands and arms of a figure skater preparing for a spin can be considered...
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center. (See the figure below (Figure 1).) When the skater's hands and arms are brought in and wrapped around his body to execute the spin, the hands and arms can be considered a thin-walled hollow cylinder. His hands and arms have a combined mass of 7.5 kgkg . When outstretched, they span 1.8 mm ;...
  An ice skater is spinning at 6.6 rev/s and has a moment of inertia of 0.52...
  An ice skater is spinning at 6.6 rev/s and has a moment of inertia of 0.52 kg ⋅ m2. a.)  Calculate the angular momentum, in kilogram meters squared per second, of the ice skater spinning at 6.6 rev/s. 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 1.5 rev/s. c.) Suppose instead he keeps his...
An ice skater with a moment of inertia of 0.390 kg*m2 is spinning at 6.00 rev/s...
An ice skater with a moment of inertia of 0.390 kg*m2 is spinning at 6.00 rev/s a. What is the angular velocity of the ice skater in rad/s? b. What is the angular momentum of the ice skater at this angular velocity c. He reduces his rate of spin (angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia if his angular velocity drops to 1.70 rev/s d. Suppose instead...
Diana, a figure skater, is initially spinning at an angular speed 2.50 rev/s, with her arms...
Diana, a figure skater, is initially spinning at an angular speed 2.50 rev/s, with her arms and legs inward. Assume that she is a uniform cylinder with a height of 1.4 m, a radius of 18 cm, and a mass of 55 kg. Assume no external torques act. a) What is her moment of inertia? b) If she extends her arms outward, what is her new moment of inertia? Assume that her armspan is 1.3 m and her arms are...
a) Calculate the angular momentum (in kg·m2/s) of an ice skater spinning at 6.00 rev/s given...
a) Calculate the angular momentum (in kg·m2/s) of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.450 kg·m2. Answer to 3 significant figures. (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kg·m2) if his angular velocity drops to 1.35 rev/s. Answer to 3 significant figures. c) Suppose instead he keeps his arms in and...
a) Calculate the angular momentum (in kg·m2/s) of an ice skater spinning at 6.00 rev/s given...
a) Calculate the angular momentum (in kg·m2/s) of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.450 kg·m2. Answer to 3 significant figures. (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kg·m2) if his angular velocity drops to 1.35 rev/s. Answer to 3 significant figures. c) Suppose instead he keeps his arms in and...
A 45 kg figure skater is spinning on the toes of her skates at 0.50 rev/s...
A 45 kg figure skater is spinning on the toes of her skates at 0.50 rev/s . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (40 kg , 20 cm average diameter, 160 cm tall) plus two rod-like arms (2.5 kg each, 71 cm long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to...