Consider a ball on a fixed-length string being whirled in a horizontal circular
ID: 1448001 • Letter: C
Question
Consider a ball on a fixed-length string being whirled in a horizontal circular path.
(a) What happens to the tension in the string if the ball is whirled twice as fast?
The tension is quartered.
The tension is halved.
The tension is doubled.
The tension is quadrupled.
(b) How would the tension in the string be affected if the length of the string were doubled, the mass and speed remaining the same?
The tension is quartered.
The tension is halved.
The tension is doubled.
The tension is quadrupled.
Explanation / Answer
T = MV2/R
a) if the ball is whirled twice as fast - The tension is quadrupled
b) if the length of the string were doubled, the mass and speed remaining the same - The tension is halved.
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