(i) A uniform ladder of length 7 m rests against a vertical wall. It makes an angle of 45° with the wall. The cocfficients of friction between the ladder and the wall is and between the ladder and the ground is . A girl whose weight is half that of the ladder slowly ascends the ladder. Find how far up along the ladder will she climb before the ladder begins to slip.

(i) A uniform ladder of length 7 m rests against a vertical wall. It makes an angle of 45° with the wall. The cocfficients of friction between the ladder and the wall is and between the ladder and the ground is . A girl whose weight is half that of the ladder slowly ascends the ladder. Find how far up along the ladder will she climb before the ladder begins to slip.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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