Podcast
Questions and Answers
What is the magnitude of the force F₁?
What is the magnitude of the force F₁?
What is the length of the stick shown in the figure?
What is the length of the stick shown in the figure?
What is the direction of the change in angular velocity of the stick when F₃ and F₄ are exerted on it?
What is the direction of the change in angular velocity of the stick when F₃ and F₄ are exerted on it?
When F₂ and F₃ are exerted on the stick, what will be the effect on the stick's angular velocity?
When F₂ and F₃ are exerted on the stick, what will be the effect on the stick's angular velocity?
Signup and view all the answers
Which of the four forces, when exerted in the absence of the other three forces, will change the angular velocity of the stick at the greatest rate?
Which of the four forces, when exerted in the absence of the other three forces, will change the angular velocity of the stick at the greatest rate?
Signup and view all the answers
What is the net torque about the pivot point when all four forces are exerted on the stick?
What is the net torque about the pivot point when all four forces are exerted on the stick?
Signup and view all the answers
When F₁ and F₂ are exerted on the stick, what will be the effect on the stick's angular velocity?
When F₁ and F₂ are exerted on the stick, what will be the effect on the stick's angular velocity?
Signup and view all the answers
What is the unit of the angular momentum of the stick?
What is the unit of the angular momentum of the stick?
Signup and view all the answers
Study Notes
Forces and Torque
- A uniform density stick is attached to a pivot at the right end, with equally spaced marks along its length.
- Four forces (F₁, F₂, F₃, and F₄) can be exerted on the stick.
Angular Momentum
- The angular momentum of the stick is being asked, with four options: 150 kg-m²/s, 450 kg-m²/s, 650 kg-m²/s, and 750 kg-m²/s.
Forces and Angular Velocity
- Two of the four forces can be exerted on the stick, affecting its angular velocity.
- Predictions about the change in angular velocity of the stick per unit of time:
- F₁ and F₂: greatest change in angular velocity per unit of time.
- F₁ and F₃: no change in angular velocity per unit of time.
- F₂ and F₃: change in angular velocity per unit of time, but rate not specified.
- F₃ and F₄: smallest change in angular velocity per unit of time.
Torque and Angular Velocity Change
- When a single force is exerted on the stick, the rate of change of its angular velocity varies.
- The force that changes the angular velocity of the stick at the smallest rate is being asked.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of torque and rotational motion with this multiple-choice quiz. Calculate the angular momentum of a stick with uniform density and four forces acting on it. Try to solve the problem and check your answer with the options provided.
