A rotating platform turns with a constant angular acceleration 2.00 [rad/s²] A. How much time does it take to reach an angular velocity of 34.0 [rad/s] starting from rest? B. How many revolutions does the platform turn in the time interval answered in A? C. What are the tangential speed and tangential acceleration of a small bug sitting on the platform 20.0 [cm] from the axis of rotation during the end of this interval?

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Chapter1: Units, Trigonometry. And Vectors
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Only answer b and c
A rotating platform turns with a constant angular acceleration 2.00 [rad/s²]
A. How much time does it take to reach an angular velocity of 34.0 [rad/s] starting from
rest?
B. How many revolutions does the platform turn in the time interval answered in A?
C. What are the tangential speed and tangential acceleration of a small bug sitting on the
platform 20.0 [cm] from the axis of rotation during the end of this interval?
D. What is the moment of inertia of the bug if its mass is 15.0 [g]? Hint: Treat the bug as a
point particle.
E. What is the rotational kinetic energy of the bug?
Transcribed Image Text:A rotating platform turns with a constant angular acceleration 2.00 [rad/s²] A. How much time does it take to reach an angular velocity of 34.0 [rad/s] starting from rest? B. How many revolutions does the platform turn in the time interval answered in A? C. What are the tangential speed and tangential acceleration of a small bug sitting on the platform 20.0 [cm] from the axis of rotation during the end of this interval? D. What is the moment of inertia of the bug if its mass is 15.0 [g]? Hint: Treat the bug as a point particle. E. What is the rotational kinetic energy of the bug?
F2
F1
3. Torque
Himis:
In square, a =b
DUse : T=Ià
Get L
- angulor cceleration hos same
direction witht
45°
F3
O Use: ws w, t xt
- at rest initiallg + w.rO
- Get w
Transcribed Image Text:F2 F1 3. Torque Himis: In square, a =b DUse : T=Ià Get L - angulor cceleration hos same direction witht 45° F3 O Use: ws w, t xt - at rest initiallg + w.rO - Get w
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