Crystallites of LaB6 and Electron Diffraction Pattern Quiz
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Questions and Answers

What imposes an upper limit on the speed of a vehicle on a slippery or sandy road?

  • Normal reaction
  • Centrifugal force
  • Vehicle weight
  • Coefficient of static friction (correct)

    • What does the normal reaction in circular motion depend on for a four-wheeler?

  • Vehicle's weight
  • Friction between tires and road
  • Individual normal reactions at each tire (correct)
  • Vehicle's speed

    • What force balances the centrifugal force in the frame of reference attached to a vehicle?

  • Frictional force
  • Centripetal force (correct)
  • Vehicle weight
  • Normal reaction

    • What does the coefficient of static friction determine in relation to a vehicle on a road?

    <p>Maximum possible speed</p> Signup and view all the answers

    In circular motion, where does the centrifugal force act on a vehicle?

    <p>At the center of mass</p> Signup and view all the answers

    What remains constant for a given vehicle on a specific track?

    <p>Normal reaction</p> Signup and view all the answers

    What is the primary focus of the text?

    <p>Discussing the concepts of rotational motion and mechanics</p> Signup and view all the answers

    What is the purpose of using a barometer?

    <p>To measure atmospheric pressure</p> Signup and view all the answers

    Which of the following is NOT mentioned in the text as a concept or property related to fluids?

    <p>The process of crystallization and electron diffraction</p> Signup and view all the answers

    What is the relationship between moment of inertia and angular momentum?

    <p>Moment of inertia is directly proportional to angular momentum</p> Signup and view all the answers

    Which principle or law is mentioned in the text for explaining the working of hydraulic lifts and brakes?

    <p>Pascal's law</p> Signup and view all the answers

    What is the purpose of introducing the concept of degrees of freedom in the context of the text?

    <p>To obtain the degrees of freedom of a diatomic molecule</p> Signup and view all the answers

    What is the radius of the horizontal circular motion of the rider on the merry-go-round?

    <p>3.0 m</p> Signup and view all the answers

    What does T sin θ = mr ω^2 represent in the context of the text?

    <p>Equation for the tension along the inclined rod</p> Signup and view all the answers

    In which type of vertical circular motion is the speed NOT totally controlled by gravity?

    <p>A controlled vertical circular motion</p> Signup and view all the answers

    What does the equation T cos θ = mg represent in the context of the text?

    <p>Equation for the tension along the inclined rod</p> Signup and view all the answers

    What is the angle θ in the context of the text?

    <p>37°</p> Signup and view all the answers

    How does angular speed change for a marble in a funnel as it moves from brim to base?

    <p>Increases at brim and decreases at base</p> Signup and view all the answers

    At what positions does the string become horizontal?

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

    What is the centripetal force used to change the direction of velocity in vertical circular motion?

    <p>Force due to tension</p> Signup and view all the answers

    Which force is responsible for changing the speed in vertical circular motion?

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

    Which position experiences both weight mg and force due to tension downwards?

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

    What is the resultant of weight mg and tension force at positions other than uppermost and lowermost positions?

    <p>Tangential and used to change speed</p> Signup and view all the answers

    Which equation shows the relationship between tensions at different points in vertical circular motion?

    <p>$TC = TA = 3mg$</p> Signup and view all the answers

    What is the formula to express moment of inertia of any object when only interested in mass distribution around the axis of rotation?

    <p>I = MK^2</p> Signup and view all the answers

    How is the radius of gyration (K) defined for an object?

    <p>Distance at which mass is effectively located from the axis of rotation</p> Signup and view all the answers

    In the context of moment of inertia, what does a larger value of K signify?

    <p>The mass of the object is farther from the axis</p> Signup and view all the answers

    If an object has a small value for its radius of gyration (K), what can be inferred about its mass distribution?

    <p>The mass is concentrated closer to the axis of rotation</p> Signup and view all the answers

    How can moment of inertia be determined experimentally for any object?

    <p>By analyzing mass distribution and rotational behavior</p> Signup and view all the answers

    For a uniform circular object like a disk, how can it be considered in terms of its construction?

    <p>As a collection of concentric rings with radii increasing from zero to its radius</p> Signup and view all the answers

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