31. A 2.55 kg bucket of sand is attached to a 1.31­m long rope and is swung in a vertical circle. At the bottom of the circle the tension in the rope is 30.2 N. What is the speed of the bucket of sand at the bottom of the circle? A. 1.85 m/s B. 2.61 m/s C. 3.41 m/s D. 6.01 m/s

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Chapter6: Applications Of Newton's Laws
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Problem 69P: (a) What is the radius of a bobsled turn banked at 75.0and taken at 30.0 m/s, assuming it is ideally...
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31. A 2.55 kg bucket of sand is attached to a 1.31­m long rope and is swung in a vertical circle. At the bottom of the circle the tension in the rope is 30.2 N. What is the speed of the bucket of sand at the bottom of the circle?
A. 1.85 m/s
B. 2.61 m/s
C. 3.41 m/s
D. 6.01 m/s

Unit 4 Circular motion
Page 11 of 19
schoolnet
31. A 2.55 kg bucket of sand is attached to a 1.31-m long rope and is swung in a vertical circle. At the bottom of
the circle the tension in the rope is 30.2 N. What is the speed of the bucket of sand at the bottom of the
circle?
A
1.85 m/s
В.
2.61 m/s
С.
3.41 m/s
D.
6.01 m/s
32. A 40.0 cm diameter pulley is attached to a motor and is rotating at 1,800 rev/min. What is the acceleration of
a point on the outer edge of the pulley?
A 7,100 m/s²
14,200 m/s2
17,000 m/s2
72,000 m/s?
В.
С.
D.
Page 12 I 19
+
Transcribed Image Text:Unit 4 Circular motion Page 11 of 19 schoolnet 31. A 2.55 kg bucket of sand is attached to a 1.31-m long rope and is swung in a vertical circle. At the bottom of the circle the tension in the rope is 30.2 N. What is the speed of the bucket of sand at the bottom of the circle? A 1.85 m/s В. 2.61 m/s С. 3.41 m/s D. 6.01 m/s 32. A 40.0 cm diameter pulley is attached to a motor and is rotating at 1,800 rev/min. What is the acceleration of a point on the outer edge of the pulley? A 7,100 m/s² 14,200 m/s2 17,000 m/s2 72,000 m/s? В. С. D. Page 12 I 19 +
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