A uniform ladder of length 7m and mass 15kg, rests in limiting equilibrium against a smooth vertical wall, while its lower end is on a rough horizontal surface. The ladder is inclined at an angle of 60° to the horizontal surface. The coefficient of friction between the ladder and the horizontal surface is 0.3. A boy of mass 25kg climbs up the ladder. Find out how high up the ladder the boy can climb without it slipping.

A uniform ladder of length 7m and mass 15kg, rests in limiting equilibrium against a smooth vertical wall, while its lower end is on a rough horizontal surface. The ladder is inclined at an angle of 60° to the horizontal surface. The coefficient of friction between the ladder and the horizontal surface is 0.3. A boy of mass 25kg climbs up the ladder. Find out how high up the ladder the boy can climb without it slipping.

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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