Question

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 allows friction with the ice to slow him to 3.00 rev/s. What average torque (in N·m) was exerted if this takes 16.0 seconds? Answer to 3 significant figures

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
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...
The moment of inertia of an ice skater is 0.400 kg·m2 when he is spinning at...
The moment of inertia of an ice skater is 0.400 kg·m2 when he is spinning at 6.00 rev/s. (a) He reduces his angular velocity by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia if his angular velocity decreases to 1.25 rev/s. (b) Suppose instead he keeps his arms in and allows friction on the ice to slow him to 3.00 rev/s What average torque was exerted if this takes 15.0 s?
  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...
What is the angular momentum of a figure skater spinning at 2.3 rev/s with arms in...
What is the angular momentum of a figure skater spinning at 2.3 rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.5 m, a radius of 16 cm , and a mass of 49 kg ? How much torque(in magnitude) is required to slow her to a stop in 4.8 s , assuming she does not move her arms?
a. What is the angular momentum of a figure skater spinning at 2.0 rev/s with arms...
a. What is the angular momentum of a figure skater spinning at 2.0 rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1 m, a radius of 0.2 m, and a mass of 50 kg? b. How much torque is required to slow her to a stop in 5.0 s, assuming she does not move her arms?
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 skater is initially spinning at a rate of 19.70 rad/s with a rotational inertia of...
A skater is initially spinning at a rate of 19.70 rad/s with a rotational inertia of 2.540 kg·m2 when her arms are extended. What is her angular velocity after she pulls her arms in and reduces her rotational inertia to 1.620 kg·m2?
A skater is spinning on the ice and extends her arms out straight. Discuss the effect...
A skater is spinning on the ice and extends her arms out straight. Discuss the effect this will have on her moment of inertia, her angular momentum, and her angular velocity. Will each increase, decrease, or stay the same? Explain. Please be specific?
A figure skater is spinning slowly with arms outstretched. He brings his arms in close to...
A figure skater is spinning slowly with arms outstretched. He brings his arms in close to his body and his angular velocity changes by a factor of 2. By what factor does his moment of inertia change, and why?
What is the angular momentum of a figure skater spinning at 3.2rev/s with arms in close...
What is the angular momentum of a figure skater spinning at 3.2rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.5m , a radius of 16cm , and a mass of 55kg? How much torque is required to slow her to a stop in 4.4s , assuming she does not move her arms?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT