static equilibrium problems

p32 a uniform ladder of mass and length leans at an

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Unformatted text preview: the wrong direction for this component. Thus, .* & is negative pointed downwards. .* & is Magnitude: .* .* % ' .* & P32. A uniform ladder of mass and length leans at an angle against a frictionless wall, Fig. 12-72. If the coefficient of static friction between the ladder and the ground is , / what is the minimum angle at which the ladder will not slip? Solution: FN2 θ y x FN1 θ mg θ θ Ff r ( cos cos 0 0 1 0 sin 1 tan %- 0 0 &- sin tan 0 0 5 The friction force has a maximum which it cannot exceed: 2 ,0 2, tan tan 3 11 ,11 , tan P53. What is the maximum tension possible in a 1.00 mm diameter nylon tennis racket string? If you want tighter strings, what do you do to preven...
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