A disk with a diameter of 0.06 m is spinning with a constant velocity about an...
A disk with a diameter of 0.06 m is spinning with a constant velocity about an axle perpendicular to the disk and running through its center.
1)
How many revolutions per second would it have to rotate in order for the acceleration of the outer edge of the disk to be 12 g's (i.e., 12 times the gravitational acceleration g)?
f =
2)
For the frequency determined in part (a), what is the speed of a point half way between the axis of rotation and the edge of the disk?
v1/2 =
3)
At this same frequency, what is the period of rotation of this \"halfway point\"?
T =
4)
How long does it take a point on the edge of the disk to travel 1 km?
T1000 =
5)
Suppose we double the diameter of the disk. We still want the same 12 g acceleration at the outer edge. Let f2 be the number of revolutions per second needed to get that acceleration. What is the ratio R = f2/f, where f is your answer to part (a)? Answer according to the following key:
- 1 = 0.500
- 2 = 0.707
- 3 = 1.000
- 4 = 1.414
- 5 = 2.000
- 6 = none of the above
R =
Homework Answers
Concept: we use the properties of circular motion to find various values as shown below
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A disk with a diameter of 0.06 m is spinning
with a constant velocity about an...
A disk with a diameter of 0.08 m is spinning with a constant velocity about an...
A disk with a diameter of 0.08 m is spinning with a constant velocity about an axle perpendicular to the disk and running through its center. At this same frequency, what is the period of rotation of this \"halfway point\"? T = How long does it take a point on the edge of the disk to travel 1 km? T1000 = Suppose we double the diameter of the disk. We still want the same 14 g acceleration at the outer...
1). A metal disk with radius, r, is spinning with a constant angular velocity. A red...
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and a blue magnet is placed at r. If you compare the
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The mass of the disk is 0.35 kg with a radius of 0.18 m and is
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