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rooster_17
Nov10-04, 10:29 AM
This might be an easy problem, but I am missing something and am not sure where to start so here is the problem:

A student ties a 500g rock to a 1.0-m-long string and swings it around her head in a horizontal circle. At what angular velocity, does the string tilt down at a 10 degree angle?

If anyone can help me get going on this problem I would greatly appreciate it.

Galileo
Nov10-04, 10:52 AM
Draw a diagram and consider gravity and the centrifugal 'force' on the rock.
The net force must make a 10 degree angle with the horizontal.