- #1
Bob K99
- 5
- 1
Homework Statement
A ball whirling on the end of a string, length L
Maximum tension in string before it breaks: T sub break
Find an equation for the maximum speed of the ball , V sub max, in terms of the ball's mass, M, the breaking
tension T sub break, and the gravitational acceleration g
Ignore the angle theta the string makes with the horizontal plane
Homework Equations
F= mass times acceleration
Acceleration = m x v squared / r (radius)
The Attempt at a Solution
I used algebra and the Pythagorean theorem to get
v = the square root of L x ( T squared - M squared x G squared ) / M
but the correct answer is V = the square root of L x ( T squared - M squared x G squared) / M x T
I cannot figure out how the T sub break showed up in denominator
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