- #1
anneseanandy
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I need to calculate the force required to pull a copper ball radius 2.00cm upward through a fluid at the constant speed 9.00cm/s. The drag forse is to be proportional to the speed, with proportionality constant .950kg/s. Ignore any boyant force.
What I did so far was figure out the resistive force using the equation: R=-bv, where b= .950kg/s and v= .09m/s
So that gives me -.0855Newtons.
My equation set up so far is:
SumYForces = mg+ Resitive force= Pull Force
and then from there I have no clue, the answer in the back of the book is 3.01 N, but I just can't seem to get it. Thanks -anne
What I did so far was figure out the resistive force using the equation: R=-bv, where b= .950kg/s and v= .09m/s
So that gives me -.0855Newtons.
My equation set up so far is:
SumYForces = mg+ Resitive force= Pull Force
and then from there I have no clue, the answer in the back of the book is 3.01 N, but I just can't seem to get it. Thanks -anne