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WorksheetsCP Rotational Kinematics Review
Total questions: 30
Worksheet time: 30mins
The angle through which a point, line, or body is rotated in a specific direction and around a specific axis •
angular velocity
angular displacement
radian
degree
Suppose a bicycle wheel of radius R rolls without slipping for a linear distance x. What is the angular displacement the bicycle wheel during this movement?
θ=rx
θ=xr
θ=xr
θ=xr2
A mass is hung from a string that is wrapped around a wheel of known radius R on a rotational apparatus. The system is released from rest, and the mass accelerates towards the ground. A physics student measures the distance the mass falls as well as the time, and they calculate the acceleration of the mass as a.
What equation would allow the student to determine the angular acceleration of the apparatus as the mass falls with the given information?
a=αR
ω=ω0+αt
α=I∑τ
ω2=ω02+2αΔθ
What does the slope of a θ vs t graph represent?
The angular acceleration ( α )
The angular velocity ( ω )
The angular displacement ( Δθ )
The torque ( τ )
What does the slope of a ω vs t graph represent?
The angular acceleration ( α )
The angular velocity ( ω )
The angular displacement ( Δθ )
The torque ( τ )
A fixed point, around which something turns, perpendicular to the rotation.
axis of rotation
diameter
radius
circumference of a circle
Which Which of the following graphs, if any, shows the angular velocity ω of the pulley as a function of time t after the block is released from rest?
A disk initially rotating counterclockwise (CCW) at a certain constant angular speed is suddenly being pulled on by two strings T1 and T2, where T2 > T1. What is going to happen next?
The disk will continued rotating CCW at the constant angular speed.
The disk will continued rotating CCW but it will speed up
The disk will slow down and start rotating CW
The disk will eventually stop rotating
A rotating wheel has a point A marked on the outside rim of the wheel and a point B marked at a distance halfway from the axis of the wheel to the rim. Compare the linear velocity and the angular velocity of these two points
The linear velocity at point A is the same as the linear velocity at point B, but the angular velocity is greater at point A
The linear velocity at point A is the same as the linear velocity at point B, but the angular velocity is greater at point B
The angular velocity at point A is the same as the angular velocity at point B, but the linear velocity is greater at point A
The angular velocity at point A is the same as the angular velocity at point B, but the linear velocity is greater at point B
What does the term "centripetal" mean?
Center Fleeing
Circular
Rotational
Center Seeking
Which of the following is true about an object in uniform circular motion?
The speed of the object is constant
The acceleration of the object is constant
The object has not net force exerted on it
The velocity of the object is constant
If your car door wasn't on your car, you were not wearing your seatbelt, and you turned right very quickly around a tight curve, what would happen to you (the driver)?
You would lean into the car and remain inside the vehicle
You would want to continue straight along your tangent, falling out of the car
You would stay inside the car because of friction of your body on the seat
What does the term "tangential" mean?
Moving in a straight line
Moving in a cirlce
Moving forward
Moving around
In uniform circular motion, there is a
Constant velocity
Constant angular velocity
Zero acceleration
Net tangential acceleration
Is there an example when a car experiences both centripetal and angular acceleration?
Yes; when a car is changing its speed around a curve
No; both accelerations cannot act at the same time
Yes; when the car is moving in a straight line
No; the car only experiences centripetal acceleration around a curve
When an object rotates in circular motion, it has
Only angular velocity
Neither tangential or angular velocity
Both tangential and angular velocity
Only tangential velocity
A motorcyclist moves at a constant speed down one hill and up another hill along the smooth curved surface. When the motorcyclist reaches the lowest point of the curve its velocity and acceleration directions are
The angular acceleration in circular motion
Is equal in magnitude to the tangential acceleration divided by the radius
Increases the angular velocity in the same direction
Has units of rad/s2
All of the above
The SI units for ω are
rad
rad/s
rad/s2
seconds
The SI units for Θ are
rad
rad/s
rad/s2
seconds
The SI units for α are
rad
rad/s
rad/s2
seconds
What angular variable is comparable to the tangential variable of velocity?
ω
Θ
α
π
What angular variable is comparable to the tangential variable of acceleration?
ω
Θ
α
π
What angular variable is comparable to the tangential variable of displacement?
ω
Θ
α
π
