ODI48. (II) A small box is held in place against a rough verticalwall by someone pushing on it with a force directed upwardat 28° above the horizontal. The coefficients of static andkinetic friction between the box and wall are 0.40 and0.30, respectively. The box slides down unless the appliedforce has magnitude 23 N. What is the mass of the box?49. (II) Two crates, of mass 65 kg and 125 kg, are in contact andat rest on a horizontal surface (Fig. 4-57). A 650-N forceis exerted on the 65-kg crate. If the coefficient of kineticfriction is 0.18, calculate (a) the acceleration of the sys-tem, and (b) the force that each crate exerts on the other.(c) Repeat with the crates reversed.650 N65 kg 125 kgFIGURE 4-57Problem 49.50. (II) A person pushes a 14.0-kg lawn mower at constantspeed with a force of F = 88.0 N directed along the handle,which is at an angle of 45.0° to the horizontal (Fig. 4-58).the bedof abou56. (II) Aerates cimpedifriction57. (II) ThmFIGURE 4-5Problems 5758. (II) A bplane shgo? (b)

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(II) A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28° above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. The box slides down unless the applied force has magnitude 23 N. What is the mass of the box?

(II) A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28° above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. The box slides down unless the applied force has magnitude 23 N. What is the mass of the box?

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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