Register
A bicycle wheel is rotating with an angular velocity of 15 rad/s. The wheel has a mass of 4.9 kg and a radius of 48.6 cm. Treat the wheel as a solid thin disc. a. Calculate the rotational kinetic energy
226k views
1 vote
A bicycle wheel is rotating with an angular velocity of 15 rad/s. The wheel has a mass of 4.9 kg and a radius of 48.6 cm. Treat the wheel as a solid thin disc.

a. Calculate the rotational kinetic energy of the wheel in J.
b. Calculate the angular speed the wheel must have if its rotational kinetic energy is doubled, in rad/s.

User Scott Hillson
by
5.1k points

1 Answer

6 votes

Answer:

a) kinetic energy = 130.2j

b) angular velocity when kinetic energy is doubled = 21.2rad/s

A bicycle wheel is rotating with an angular velocity of 15 rad/s. The wheel has a-example-1
A bicycle wheel is rotating with an angular velocity of 15 rad/s. The wheel has a-example-2
User Kgutwin
by
5.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.6m questions

7.3m answers

Other Questions

How does the capacitance of a parallel plate capacitor change with the geometry of the capacitor?
Explaining Wave Speed through Different Media Explain why the speed of light is lower than 3.0 × 108 m/s as it goes through different media.
Indy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minute for the next 350 meters, and 3 minutes for the rest. Cindy’s average speed
Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
List 3 quantities of waves.
Link Copied!