SOLUTION: How much centripetal force is needed to keep a 0.38 kg ball on a 1.55 m string moving in a circular path with a speed of 3.0 m/s?

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Question 1129218: How much centripetal force is needed to keep a 0.38 kg ball on a 1.55 m string moving in a circular path with a speed of 3.0 m/s?
Found 2 solutions by addingup, MathLover1:
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
The equation for Force is:
F = ma
where a = m/s^2
in this problem:
[0.38(3.0)^2]/1.55
(0.38*9)/1.55
you can finish it from here, the result will be the force needed as measured in Newtons

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!


F+=+%28mv%5E2%29%2Fr+
given: m=0.38,r=1.55, and v=3

F=+%280.38%2A3%5E2%29%2F1.55

F=+%280.38%2A9%29%2F1.55
F=+3.42%2F1.55
F=+2.2 Newtons