- #1
KnowledgeIsPower
- 90
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I'm having difficulty with the question, perhaps mainly because it is consists completely of unknowns, with little or no numbers. Help, in the form of steps to reach the proof would be much appreciated:
'A uniform ladder of mass M rests in limiting equilibrium with one end on a rough horizontal ground and the other end against a rough vertical wall. The coefficient of friction between the ladder and the ground is U. The coefficient of friction between the ladder and the wall is U'. Given that the ladder makes an angle a with the horizontal show that:
tan a = (1- UU')/2U
'A uniform ladder of mass M rests in limiting equilibrium with one end on a rough horizontal ground and the other end against a rough vertical wall. The coefficient of friction between the ladder and the ground is U. The coefficient of friction between the ladder and the wall is U'. Given that the ladder makes an angle a with the horizontal show that:
tan a = (1- UU')/2U