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Salsk061 [2.6K]

3 years ago

15

2 PUILLS

2 answers:

Bogdan [553]3 years ago

6 0

The answer is b because that’s what I know

Colt1911 [192]3 years ago

5 0

B-friction acts in direction opposite to objects motion

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A 100-N uniform ladder, 8.0 m long, rests against a smooth vertical wall. The coefficient of static friction between ladder and

frez [133]

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The minimum angle is 51.34°

Explanation:

Given that,

Weight of ladder = 100 N

Length = 8.0 m

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Using Newtons law in vertical direction

$F_{y}=n-mg$

$N-mg=0$

$N=mg$

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$F_{s}=f_{s}-P$

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We need to calculate the minimum angle

Using torque about the point A then

$-mg\cos\theta\times AB+P\sin\theta\times AC=0$

Put the value into the formula

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