physics ch 11 T or F

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a spinning wheel will maintain its state of angular momentum unless acted on by an external torque

T

gymnasts change their rotational inertia while going through gymnastic routines

T

ice skaters can increase their spin rate by using the conservation of angular momentum

T

in order to increase his or her rotational inertia, a tightrope walker can carry a long stick

T

rotational inertia is the resistance an object has to change s in it s rotational state

T

torque is the product of a force exerted on an object times the lever arm

T

a short pendulum has more rotational inertia than a long pendulum of the same mass

F

if you kick a football through its center of gravity, it will tumble as it sails through the air.

F

in order for a seesaw to be in rotational equilibrium, the sum of the torque acting on it need not be balanced if one person sits closer to the fulcrum than the other person

F

the distance between a turning axis and the point of contact of a perpendicular force is called the fulcrum

F


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