7. In order to swing a 0.1-kg.mass tied to one end of a cord in a horizontal circle of radius 0.5 m so that its tangential speed is 0.2 m/s, what cen- tripetal force must you exert on the mass through the cord? 8. Calculate the gravitational force of attraction. between a mass of 50 kg and a mass of 60 kg when they are 2.0 m apart.
7. In order to swing a 0.1-kg.mass tied to one end of a cord in a horizontal circle of radius 0.5 m so that its tangential speed is 0.2 m/s, what cen- tripetal force must you exert on the mass through the cord? 8. Calculate the gravitational force of attraction. between a mass of 50 kg and a mass of 60 kg when they are 2.0 m apart.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter7: Gravity
Section: Chapter Questions
Problem 64PQ
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