Center of Gravity and Equilibrium
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Questions and Answers

What is the condition for a body to be in equilibrium?

  • The sum of all external forces acting on it is infinite
  • The sum of all external forces acting on it is zero (correct)
  • The sum of all external forces acting on it is greater than zero
  • The sum of all external forces acting on it is less than zero

    • What is the term for the point where the weight of a body can be considered to act?

  • Balance point
  • Center of mass
  • Center of gravity (correct)
  • Point of support

    • What is the product of an object's mass and velocity?

  • Torque
  • Energy
  • Force
  • Momentum (correct)

    • When is a body in stable equilibrium?

    <p>When its center of gravity is directly above its point of support</p> Signup and view all the answers

    What is the point where the weight of a body can be considered to act also known as?

    <p>Balance point</p> Signup and view all the answers

    What plays a crucial role in determining the momentum of a body?

    <p>Center of gravity</p> Signup and view all the answers

    Study Notes

    Center of Gravity

    Equilibrium

    • A body is in equilibrium when the sum of all external forces acting on it is zero
    • The center of gravity is the point where the weight of the body can be considered to act
    • In equilibrium, the center of gravity is directly above the point of support
    • A body can be in stable, unstable, or neutral equilibrium depending on the position of its center of gravity

    Momentum

    • The center of gravity is also the point where the momentum of a body can be considered to act
    • Momentum is the product of an object's mass and velocity
    • A change in momentum occurs when an external force is applied to an object
    • The center of gravity plays a crucial role in determining the momentum of a body

    Balance Point

    • The balance point is the point where the weight of a body can be considered to act
    • The balance point is also known as the center of gravity
    • A body is in balance when its center of gravity is directly above its base of support
    • The balance point is important in determining the stability of a body

    Center of Gravity

    Equilibrium

    • A body is in equilibrium when the net external force acting on it is zero
    • The center of gravity is the point where the weight of the body can be considered to act
    • In equilibrium, the center of gravity is vertically aligned with the point of support, ensuring balance
    • Depending on the center of gravity's position, a body can be in stable, unstable, or neutral equilibrium

    Momentum

    • The center of gravity is the point where the momentum of a body can be considered to act
    • Momentum is the product of an object's mass and velocity (p = mv)
    • A change in momentum occurs when an external force is applied to an object, causing a change in its motion
    • The center of gravity plays a crucial role in determining the momentum of a body, influencing its motion

    Balance Point

    • The balance point is the point where the weight of a body can be considered to act, also known as the center of gravity
    • A body is in balance when its center of gravity is directly above its base of support, ensuring stability
    • The balance point is critical in determining the stability of a body, as it affects its equilibrium state

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    Description

    Understand the concept of center of gravity, equilibrium, and momentum. Learn how to analyze the stability of objects in different states of equilibrium.

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