Answered: wall ladder bottom rung 45°

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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A uniform ladder of mass 24 kg and length 6 m leans at an angle of 45" against a smooth vertical wall as shown in the following diagram. A man of mass 60 kg starts to climb the ladder. The coefMcient of static friction between the ground and the ladder is 0,5. In order to prevent the ladder slipping an object of mass Mis placed on the bottom rung on the ladder (which is effectively floor level).

(a) Calculate the magnitude of the normal force acting on the ladder. Express your answer in units of Newtons.

(b) Find M for the man to be able to climb to the top of the ladder. Express your answer in units of kg.

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