question

the same as the angular speed of ladybug 2

answer

What is the angular speed of ladybug 1?
one-half the angular speed of ladybug 2
the same as the angular speed of ladybug 2
twice the angular speed of ladybug 2
one-quarter the angular speed of ladybug 2

question

2

answer

What is the ratio of the linear speed of ladybug 2 to that of ladybug 1?

question

2

answer

What is the ratio of the magnitude of the radial acceleration of ladybug 2 to that of ladybug 1?

question

+z

answer

What is the direction of the vector representing the angular velocity of ladybug 2? See the figure for the directions of the coordinate axes.
+x
âˆ’x
+y
âˆ’y
+z
âˆ’z

question

âˆ’y

answer

Now assume that at the moment pictured in the figure, the disk is rotating but slowing down. Each ladybug remains "stuck" in its position on the disk. What is the direction of the tangential component of the acceleration (i.e., acceleration tangent to the trajectory) of ladybug 2?
+x
âˆ’x
+y
âˆ’y
+z
âˆ’z

question

true

answer

True or false: The quantity represented by Î¸ is a function of time (i.e., is not constant).
true
false

question

false

answer

True or false: The quantity represented by Î¸0 is a function of time (i.e., is not constant).
true
false

question

false

answer

True or false: The quantity represented by Ï‰0 is a function of time (i.e., is not constant).
true
false

question

true

answer

True or false: The quantity represented by Ï‰ is a function of time (i.e., is not constant).
true
false

question

Ï‰2=Ï‰20+2Î±(Î¸âˆ’Î¸0)

answer

Which of the following equations is not an explicit function of time t? Keep in mind that an equation that is an explicit function of time involves t as a variable.
Î¸=Î¸0+Ï‰0t+12Î±t^2
Ï‰=Ï‰0+Î±t
Ï‰2=Ï‰20+2Î±(Î¸âˆ’Î¸0)

question

the time elapsed from when the angular velocity equals Ï‰0 until the angular velocity equals Ï‰

answer

In the equation Ï‰=Ï‰0+Î±t, what does the time variable t represent?
Choose the answer that is always true. Several of the statements may be true in a particular problem, but only one is always true.
the moment in time at which the angular velocity equals Ï‰0
the moment in time at which the angular velocity equals Ï‰
the time elapsed from when the angular velocity equals Ï‰0 until the angular velocity equals Ï‰

question

Î¸B(t)=Î¸0+1/2Ï‰0(tâˆ’t1)+Î±(tâˆ’t1)^2

answer

Which of the following equations describes the angular position of particle B?
Î¸B(t)=Î¸0+2Ï‰0t+14Î±t^2
Î¸B(t)=Î¸0+1/2Ï‰0t+Î±t^2
Î¸B(t)=Î¸0+2Ï‰0(tâˆ’t1)+1/4Î±(tâˆ’t1)^2
Î¸B(t)=Î¸0+1/2Ï‰0(tâˆ’t1)+Î±(tâˆ’t1)^2
Î¸B(t)=Î¸0+2Ï‰0(t+t1)+1/4Î±(t+t1)^2
Î¸B(t)=Î¸0+1/2Ï‰0(t+t1)+Î±(t+t1)^2

question

(Ï‰0+2Î±t1)/2Î±

answer

How long after the time t1 does the angular velocity of particle B equal that of particle A?
Ï‰0/4Î±
(Ï‰0+4Î±t1)/2Î±
(Ï‰0+2Î±t1)/2Î±
The two particles never have the same angular velocity.

question

ma/mb = 0.333

answer

Find the ratio of the masses of the two balls.

question

da = 3L/4

answer

Find da, the distance from ball a to the system's center of mass.

question

C=F>B>A=E>D

answer

Rank the moments of inertia of this object about the axes indicated.

question

Router = 0.6 m R inner = 0.5 m > Router = 0.4 m R inner = 0.3 m > Router = 0.8 m R inner = 0.4 m = Router = 0.4 m R inner = 0.2 m = Router = 0.2 m R inner = 0.1 m > Router = 0.6 m R inner = 0.2 m

answer

Rank these scenarios on the basis of the linear speed of the block:
Router = 0.6 m R inner = 0.5 m, Router = 0.4 m R inner = 0.3 m, Router = 0.8 m R inner = 0.4 m, Router = 0.4 m R inner = 0.2 m, Router = 0.2 m R inner = 0.1 m, Router = 0.6 m R inner = 0.2 m

question

E =B > C > F=A > D

answer

Rank the designated points on the basis of their linear or tangential speed.

question

B > C > F > A=D=E

answer

Rank the designated points in (Figure 2) on the basis of the magnitude of their linear or radial acceleration.

question

B > C > A=F> D=E

answer

Rank these graphs on the basis of the angular velocity of each object. Rank positive angular velocities as larger than negative angular velocities.

question

A=B=C=D=E=F

answer

Rank these graphs on the basis of the angular acceleration of the object. Rank positive angular accelerations as larger than negative angular accelerations.