Forces and Terminal Velocity Quiz
18 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 net downward force responsible for the initial increase in velocity of an object moving through a viscous medium?

  • Weight of the object
  • Buoyant force
  • Total upward force (correct)
  • Viscous force
  • When a spherical object reaches its terminal velocity, what is true about the total downward force acting on it?

  • It does not affect the object
  • It is smaller than the total upward force
  • It is equal to the total upward force (correct)
  • It is greater than the total upward force
  • In the equation for terminal velocity, what does 'Fv' represent?

  • Buoyant force
  • Viscous force (correct)
  • Total upward force
  • Weight of the object
  • What happens to the downward velocity of an object once it reaches its terminal velocity?

    <p>It remains constant</p> Signup and view all the answers

    Which force increases with the increase in velocity when an object moves through a viscous medium?

    <p>Viscous force</p> Signup and view all the answers

    'Net downward force given by f = Fg - (Fv+ Fu)' refers to which stage of an object's motion?

    <p>Initial increase in velocity stage</p> Signup and view all the answers

    What is the force due to atmospheric pressure just below the surface of a liquid?

    <p>f A</p> Signup and view all the answers

    In a concave liquid surface, where is the greater pressure developed?

    <p>Inside the liquid on the concave side</p> Signup and view all the answers

    What is the total downward force acting on a molecule at point B just below the surface of a liquid?

    <p>f A</p> Signup and view all the answers

    Which force contributes in deciding the pressure at a point just below the surface of a liquid?

    <p>f A</p> Signup and view all the answers

    In a convex liquid surface, where is the greater pressure developed?

    <p>Inside the liquid on the concave side</p> Signup and view all the answers

    Which force is responsible for developing greater pressure at point B inside a liquid on the concave side of a meniscus?

    <p>T</p> Signup and view all the answers

    At which positions in the vertical circular motion is the force due to tension the only force towards the centre?

    <p>Positions C and D</p> Signup and view all the answers

    What is the significance of the centripetal force in vertical circular motion?

    <p>Changing the direction of the velocity</p> Signup and view all the answers

    What is used to change the speed of an object during vertical circular motion?

    <p>Weight only</p> Signup and view all the answers

    What is the total upward force in terms of tension (T) and weight (mg) during vertical circular motion?

    <p>$3T$</p> Signup and view all the answers

    Which equation represents the terminal velocity in the context of the provided text?

    <p>$v_B = v_A - 4rg$</p> Signup and view all the answers

    What is used at positions C and D in vertical circular motion to change the speed of the object?

    <p>Both weight mg and force due to tension</p> Signup and view all the answers

    Use Quizgecko on...
    Browser
    Browser