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WestCoast
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Homework Statement
10kg is attached to the end of a string, which is thread through a vertical tube. The string and the tube always make a 90 degree angle. The distance from the tube to the mass is R and the velocity at which it rotates is V. How much work is done to shorten the distance from the tube to the mass to x?
__distance X________10kg
[l] string
[l]
[l] t
[l] u
[l] b
[l] e
[l]
.l
.l string
Homework Equations
work = torque * theta = r*F*sin(theta)
The Attempt at a Solution
string radius being shortened from X to x, so the displacement is (X-x)
does the velocity change?