Homework Help is Here – Start Your Trial Now!
Science
Physics
At a track and field meet a discus is thrown so that it spins at 5 revolutions per sccond and moves forward at 8.0 m/s. The discus can be considered a uniform cylinder with a mass of 2.0 kg and radius of 0.11 m. (a) What is the angular speed of rotation of the discus, in rad/s? (b) What is the rotational kinetic energy of the discus? (c) What is the total kinetic energy (rotational plus translational) of the discus?

At a track and field meet a discus is thrown so that it spins at 5 revolutions per sccond and moves forward at 8.0 m/s. The discus can be considered a uniform cylinder with a mass of 2.0 kg and radius of 0.11 m. (a) What is the angular speed of rotation of the discus, in rad/s? (b) What is the rotational kinetic energy of the discus? (c) What is the total kinetic energy (rotational plus translational) of the discus?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
See similar textbooks
icon
Related questions
Question

can you help with 8 sub parts a, b, and c 

**Physics Problem Set** **8. Track and Field Discus Rotation** A discus is thrown at a track and field meet, spinning at 5 revolutions per second and moving forward at 8.0 m/s. The discus is modeled as a uniform cylinder with a mass of 2.0 kg and radius of 0.11 m. - (a) Calculate the angular speed of rotation of the discus, in rad/s. - (b) Determine the rotational kinetic energy of the discus. - (c) Compute the total kinetic energy (rotational plus translational) of the discus. **9. Door Torque Problem** Consider a force exerted on a door at Northside Hall. The force is 50 N and is applied perpendicular to the plane of the door. The door has a width of 1.0 m. - (a) If the force is applied at the door's edge, what is the magnitude of the torque on the swinging door, assuming the hinge is the pivot point? - (b) Sketch the situation, indicating the directions of the force and the torque in your diagram. **Diagram Description:** - For Question 9(b), a simple sketch should include a door with a marked pivot point at the hinge. Show the direction of the applied force perpendicular to the door's edge. Indicate the direction of the resulting torque (rotation around the hinge).
Transcribed Image Text:**Physics Problem Set** **8. Track and Field Discus Rotation** A discus is thrown at a track and field meet, spinning at 5 revolutions per second and moving forward at 8.0 m/s. The discus is modeled as a uniform cylinder with a mass of 2.0 kg and radius of 0.11 m. - (a) Calculate the angular speed of rotation of the discus, in rad/s. - (b) Determine the rotational kinetic energy of the discus. - (c) Compute the total kinetic energy (rotational plus translational) of the discus. **9. Door Torque Problem** Consider a force exerted on a door at Northside Hall. The force is 50 N and is applied perpendicular to the plane of the door. The door has a width of 1.0 m. - (a) If the force is applied at the door's edge, what is the magnitude of the torque on the swinging door, assuming the hinge is the pivot point? - (b) Sketch the situation, indicating the directions of the force and the torque in your diagram. **Diagram Description:** - For Question 9(b), a simple sketch should include a door with a marked pivot point at the hinge. Show the direction of the applied force perpendicular to the door's edge. Indicate the direction of the resulting torque (rotation around the hinge).
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Relativistic speed and time
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON
SEE MORE TEXTBOOKS