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A ladder of length L = 2.8 m and mass m = 16 kg rests on...

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Physics

A ladder of length L = 2.8 mand mass m = 16 kg rests on a floor with coefficient of staticfriction ?s = 0.51. Assume the wall isfrictionless.

1)

What is the normal force the floor exerts on the ladder?
2) What is the minimum angle theladder must make with the floor to not slip?
3) A person with mass M = 69 kg nowstands at the very top of the ladder. What is thenormal force the floor exerts on the ladder?

4) What is the minimum angle to keep the ladder from sliding?

Answer & Explanation Solved by verified expert
4.2 Ratings (601 Votes)
Fw is the force from the wall on the ladder It is horizontal N is the Normal Force It is vertical Ff is the friction force it points to the right u is the coefficient of friction Wp is the weight of the person equals Mass times gravity M g Wl is the weight of the ladder it is mass times gravity m g L is the length of the ladder The diagram has no    See Answer
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