Acceleration in Nonuniform Circular Motion
23 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the formula for calculating the magnitude of the resultant acceleration in nonuniform circular motion?

  • $a = \sqrt{a_r + a_t}$
  • $a = a_r + a_t$
  • $a = a_r^2 + a_t$
  • $a = \sqrt{a_r^2 + a_t^2}$ (correct)

In which type of circular motion is only tangential acceleration present?

  • Radial circular motion
  • Linear motion
  • Uniform circular motion
  • Nonuniform circular motion (correct)

What is the relationship between the two acceleration vectors, ar and at, in nonuniform circular motion?

  • They are antiparallel to each other
  • They are both in the radial direction
  • They are perpendicular to each other (correct)
  • They are collinear

What is the direction of the resultant acceleration in nonuniform circular motion with respect to ac and ar?

<p>At an angle between ac and ar (A)</p> Signup and view all the answers

What is the vector sum of centripetal and tangential acceleration in nonuniform circular motion?

<p>$a = a_r + a_t$ (B)</p> Signup and view all the answers

What is the vector that represents the change in velocity in figure 1.3 (b)?

<p>Av (C)</p> Signup and view all the answers

What is the geometric relationship between the triangle CAB in figure 1.3 (a) and the vector triangle in figure 1.3 (b)?

<p>They are similar triangles (A)</p> Signup and view all the answers

What does a represent in the equation a = 2-1 = At Δυ Δε?

<p>Time interval (A)</p> Signup and view all the answers

In figure 1.3 (c), what happens to As and Ae when At approaches zero?

<p>As and Ae become zero (B)</p> Signup and view all the answers

What does centripetal acceleration point towards?

<p>Perpendicular to the circle's radius (D)</p> Signup and view all the answers

Why is the acceleration directed towards the center of the circle called centripetal acceleration?

<p>Because it points towards the center of the circle (C)</p> Signup and view all the answers

What can be said about the relationship between linear velocity and angular velocity in uniform circular motion?

<p>They are equal at all times. (A)</p> Signup and view all the answers

In nonuniform circular motion, what does the negative angular acceleration signify?

<p>The object is slowing down. (D)</p> Signup and view all the answers

How does the centripetal acceleration vector point in uniform circular motion?

<p>Perpendicular to the linear velocity vector. (C)</p> Signup and view all the answers

What happens to the magnitude of velocity in nonuniform circular motion?

<p>It varies randomly. (B)</p> Signup and view all the answers

How is centripetal acceleration related to the radius of curvature (r) in circular motion?

<p>Directly proportional to r. (C)</p> Signup and view all the answers

What does it mean if the linear velocity vector is tangential to the path in circular motion?

<p>The object is moving in a straight line. (B)</p> Signup and view all the answers

What is the analog of the linear motion equation v = vo + at in angular motion?

<p>w = wo + at (B)</p> Signup and view all the answers

If the initial angular speed is wo and constant angular acceleration is a, what is the correct expression for the final angular speed w at time t?

<p>w = wo + αt (D)</p> Signup and view all the answers

What is the relationship between linear motion's equation F = ma and angular motion's equation w² = w² + 2αθ?

<p>F = Iω (C)</p> Signup and view all the answers

In the context of angular motion, what does the term 'θ' represent in the equation w² = w² + 2αθ?

<p>Angular displacement (B)</p> Signup and view all the answers

If the equation derived is 0 = wt == W+ w two, what is the correct interpretation of the content?

<p>Final angular speed equals initial angular speed plus angular displacement (A)</p> Signup and view all the answers

What analogy can be drawn between linear motion's equation s = v₁t+at² and angular motion's equation 0 = wot + - a t²?

<p>(Time) squared times (angular velocity) equals (initial angular speed) minus (acceleration) times (time) squared (A)</p> Signup and view all the answers

More Like This

Physics Acceleration Flashcards
10 questions
Physics Unit 3: Acceleration Flashcards
14 questions
Physics Chapter on Acceleration
39 questions
Use Quizgecko on...
Browser
Browser