A 10 m long ladder with mass of 20 kg rests against a smooth wall at height of 8 m at aninclination a to the rough ground floor. Assuming that there is no friction between the walland the ladder, but there is a frictional force between the floor and the ladder.(a)Determine the minimum static coefficient of friction, 4 between the floor and theladder for which equilibrium is possible.(b)A worker of mass 80 kg climbs up the ladder. Determine how far the worker may goup before the ladder starts to slip.(c)By comparing between frictional force of floor and wall, determine whether aworker can climb safely to the top of the ladder or not.

Given:- The length of the ladder L = 10 m The height of the wall is h = 8 m The mass of the ladder…

A 10 m long ladder with mass of 20 kg rests against a smooth wall at height of 8 m at an inclination a to the rough ground floor. Assuming that there is no friction between the wall and the ladder, but there is a frictional force between the floor and the ladder.

A 10 m long ladder with mass of 20 kg rests against a smooth wall at height of 8 m at an inclination a to the rough ground floor. Assuming that there is no friction between the wall and the ladder, but there is a frictional force between the floor and the ladder.

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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Question

A 10 m long ladder with mass of 20 kg rests against a smooth wall at height of 8 m at an
inclination a to the rough ground floor. Assuming that there is no friction between the wall
and the ladder, but there is a frictional force between the floor and the ladder.
(a)
Determine the minimum static coefficient of friction, 4 between the floor and the
ladder for which equilibrium is possible.
(b)
A worker of mass 80 kg climbs up the ladder. Determine how far the worker may go
up before the ladder starts to slip.
(c)
By comparing between frictional force of floor and wall, determine whether a
worker can climb safely to the top of the ladder or not.

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