Rock on a String#

A child ties a 0.75 kg rock to the end of a string and whirls it at a constant speed in a horizontal circle of radius 39 cm.

Part 1#

What, approximately, is the maximum speed at which the rock may be whirled if the string will break when the tension exceeds 300 N?

Answer Section#

  • 12.0 m/s

  • 2.0 m/s

  • 19.0 m/s

  • -8.0 m/s

  • 32.0 m/s


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The Creative Commons 4.0 license requiring attribution-BY, non-commercial-NC, and share-alike-SA license.