*•26 00 Figure 6-32 shows three crates being pushed over a concrete floor by a horizontal force F of magnitude 440 N. The masses of the crates are m, = 30.0 kg, m2 = 10.0 kg, and m3 = 20.0 kg. The coeffi- cient of kinetic friction between the floor and each of the crates is 0.700. (a) What is the magnitude F of the force on crate 3 from crate 2? (b) If the crates then slide onto a polished floor, where the coefficient of kinetic friction is less than 0.700, is magni- tude F more than, less than, or the same as it was when the coefficient was 0.700? Fig. 6-31 Problem 25. %3D Flg. 6-32 Problem 26. Frictionless, massless pulley

*•26 00 Figure 6-32 shows three crates being pushed over a concrete floor by a horizontal force F of magnitude 440 N. The masses of the crates are m, = 30.0 kg, m2 = 10.0 kg, and m3 = 20.0 kg. The coeffi- cient of kinetic friction between the floor and each of the crates is 0.700. (a) What is the magnitude F of the force on crate 3 from crate 2? (b) If the crates then slide onto a polished floor, where the coefficient of kinetic friction is less than 0.700, is magni- tude F more than, less than, or the same as it was when the coefficient was 0.700? Fig. 6-31 Problem 25. %3D Flg. 6-32 Problem 26. Frictionless, massless pulley

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 65PQ: A box with mass m1 = 6.00 kg sliding on a rough table with a coefficient of kinetic friction of...

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