A ball on a string moves around a complete circle, once a second, on a frictionless,...
A ball on a string moves around a complete circle, once a second, on a frictionless, horizontal table. The tension in the string is measured to be 5.9 N. What would the tension be (in N) if the ball went around in 0.21 s?
Homework Answers
According to the given problem,
Using the relation,
v ∝ 1/t
v1/v2 = t2/t1
v1/v2 = 0.21
Now, using the concept of centrepital force,
T = mv2/r
T ∝ v2
T1/T2 = (v1/v2)2
T2 = T1/0.212
T2 = 5.9/0.212
T2 = 133.786 = 134 N
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