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A 1.0 kg solid lead ball is attached to a .5 m string and swung in a circle. The ball’s speed at the end of the string is 2.5 m/s. What is the ball’s rotational inertia? (I=mr2)
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
Which has greater linear speed, a horse near the outside rail of a race track or one near the inside rail?
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
Which will swing to and fro more often, a short pendulum or a long pendulum?
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
Which will have the greater acceleration rolling down an incline-- a hoop or a solid disk?
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
Beginning from a rest position, a solid disk A, a solid ball B, and a hoop C, race down an incline. Rank them in order of finishing: winner, second place, and third place.
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
Which description would produce the greatest torque?
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
The rotational inertia of an object is greater when most of the mass is located
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
If a skater who is spinning pulls her arms in so as to reduce her rotational inertia to half, how much will her rate of spin increase?
the outside horse
away from the rotational axis
short
solid disk
B, A, C
double
.25 kg*m2
large force, long lever arm
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