A 0.5kg stone on the end of a length of a string is whirled round in a horizontal circle, radius 2m on a level frictionless table. The stone moves at a constant speed of 7m/s.Calculate
(a) The stones acceleration, stating its direction,
(b) the tension in the string,
(c)the work done by the tension during ten revolutions, explaining your answer
I've attempted part a and b using a=v2/r and tension = mg, i dont know if im right in these 2 but i dont have any idea how to do (c).
Any help is appreciated.
2007-12-04
00:47:21
·
3 answers
·
asked by
homosapien
3
in
Physics