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MMLU-Pro / 9408 / A body is whirled in a vertical circle by means of a cord attached at the center…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A body is whirled in a vertical circle by means of a cord attached at the center of the circle. At what minimum speed must it travel at the top of the path in order to keep the cord barely taut, i.e., just on the verge of collapse? Assume radius of circle to be 3 ft.

category

physics

options

  1. 9.8 ft/s
  2. 10.5 ft/s
  3. 12.3 ft/s
  4. 11.0 ft/s
  5. 6.7 ft/s
  6. 7.2 ft/s
  7. 5.4 ft/s
  8. 14.8 ft/s
  9. 4.9 ft/s
  10. 8.6 ft/s

src

stemez-Physics

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Source and history

upstream_id / Original problem ID
9408
task_id
8b692616-47b5-5ebc-a5b8-c98db49bcad7
task_key
default--test--9408
task_revision_id
1
config / split
default / test

Official source

initial import