- #1

kevinf

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## Homework Statement

Calculate the force required to pull a copper ball of radius 2.50 cm upward through a fluid at the constant speed 9.00 cm/s. Take the drag force to be proportional to the speed, with proportionality constant 0.950 kg/s. Ignore the buoyant force.

1 N

## Homework Equations

R=(1/2)DPAV^2

## The Attempt at a Solution

the above formula may not be correct but its something like that. i tried to use that formula to calculate the force but the problem doesn't give me all the information required to plug it into the formula. is there anything that i am missing taht you guys can guide me through