3 (a) You pull a solid zinc ball with a density of 7.14 g/cm and a radius of 1.20 cm upward through a fluid at a constant speed of 7.00 cm/s. The fluid exerts a drag force that is directly proportional to speed, and the proportionality constant is 0.950 kg/s. What is the magnitude of the force (in N) you exert on the ball? (You may ignore the buoyant force.) 0.57 X Draw a free body diagram. What forces act upward on the ball? What forces act downward? What is the acceleration of the ball? Be careful of units when calculating the mass of the ball. N (b) What If? By what percentage would the upward force exerted on the zinc ball have to be increased for the speed of the ball in the fluid to increase to triple its original value? calculate a new force, given the new speed? es the value of b or the mass change? How is a percent increase calculated? % you use your result from part (a) Need Help? Read It

3 (a) You pull a solid zinc ball with a density of 7.14 g/cm and a radius of 1.20 cm upward through a fluid at a constant speed of 7.00 cm/s. The fluid exerts a drag force that is directly proportional to speed, and the proportionality constant is 0.950 kg/s. What is the magnitude of the force (in N) you exert on the ball? (You may ignore the buoyant force.) 0.57 X Draw a free body diagram. What forces act upward on the ball? What forces act downward? What is the acceleration of the ball? Be careful of units when calculating the mass of the ball. N (b) What If? By what percentage would the upward force exerted on the zinc ball have to be increased for the speed of the ball in the fluid to increase to triple its original value? calculate a new force, given the new speed? es the value of b or the mass change? How is a percent increase calculated? % you use your result from part (a) Need Help? Read It

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

3
(a) You pull a solid zinc ball with a density of 7.14 g/cm and a radius of 1.20 cm upward through a fluid at a constant speed of 7.00 cm/s. The fluid exerts a drag force that
is directly proportional to speed, and the proportionality constant is 0.950 kg/s. What is the magnitude of the force (in N) you exert on the ball? (You may ignore the
buoyant force.)
0.57
X
Draw a free body diagram. What forces act upward on the ball? What forces act downward? What is the acceleration of the ball? Be careful of units when calculating the
mass of the ball. N
(b) What If? By what percentage would the upward force exerted on the zinc ball have to be increased for the speed of the ball in the fluid to increase to triple its original
value?
calculate a new force, given the new speed?
es the value of b or the mass change? How is a percent increase calculated? %
you use your result from part (a)
Need Help?
Read It

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