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  • list three ways in which a person can increase the torque that they apply to a system

    increase/lengthen lever arm
    increase force
    apply force perpendicular to lever arm

    when does a system topple

    when the center of gravity of an object is below the area of support

    what type of person has the greatest stability


    which type of person has the least stability


    which type of person has moderate stability


    what causes a rotating system to wobble

    if its center of gravity is not in line with its axis of symmetry


    a force that causes rotation

    if tcw=fd an tccw=fd, then...

    the torques are balanced

    how can you increase the lever arm of a screwdriver

    putting a wrench on the lever arm.


    acronym for counter clockwise


    occurs when cg is not above support base


    buoyancy that causes an object to sink through a medium


    when cw and ccw torques are equal and no rotation occurs


    the use of a long lever arm to increase torque


    buoyancy that causes an object to rise through a medium


    the product of force and lever arm measured in newton-meters


    an object that raises its cg with any displacement

    plumb bob

    a weighted object tied to a string and used to determine a vertical line


    humans with highest cgs


    an object that neither raises nor lowers its CG with any displacement


    an object that lowers its CG with any displacement


    acronym for clockwise


    lever arm from axis of rotation to location where force is applied


    motion that results when CG is not located at the axis or rotation


    buoyancy that causes an object to remain suspending in the medium that they displace


    humans with he lowest CGs


    when no rotation occurs because sigma torque = 0Nm


    acronym for center of gravity. the point where weight is measured from

    how is torque calculated


    how can force be maximized

    apply perpendicular force

    what happens when torques balance
    a) tcw=tccw
    b) sigma t = 0N
    c) no rotation
    d) all of these
    e) none of these

    d) all of these

    what is the lever arm of a screwdriver

    its radius

    what proportionality exists between the force and distance that yields a given torque


    a cone resting on its flat base is in what type of equilibrium


    how does a physicist express the term righty tighty


    what happens when the cg of a system is not above its support base


    which child must sit closer to the fulcrum of a teeter totter in order to balance torques

    the heavy one

    where must the fulcrum of an empty meter stick lever be located in order to balance torques


    which factor makes a building stable
    a) wide support base
    b) low CG
    c) both

    c) both of these

    which end of the baseball bat has the greater mass when it balances horizontally on its fulcrum

    the short barrel

    what does a wobbling star indicate to astronomers
    a) planets
    b) cg away from axis
    c) both of these
    d) none of these

    c) both of these

    what happens to the CG of a glass of water when a ping pong ball is pushed below its surface

    it rises

    what happens when an axis of rotation is not located at the CG


    when a high jumper clears the bar, where does her CG go

    under the bar

    what portion of a baseball bat follows a smooth parabolic flight path when thrown through air

    the bat's CG

    what can a torque cause


    which type of people have the lowest stability and the highest CG


    what happens to the CG of a system in unstable equilibrium as it topples

    it moves down

    which term describes the distance between the axis and applied force that causes rotation

    lever arm

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