What is the mass of the heaviest person

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Reference no: EM1310350

Q1. A 5.0m--long ladder has mass 12.5 and is leaning against a frictionless wall, making a 66 angle with the horizontal. If the coefficient of friction between the ladder and ground is 0.42, what is the mass of the heaviest person who can safely ascend to the top of the ladder?

Q2. You are trying to overhear a juicy conversation, but from your distance of 15m. It sounds like only an average whisper of 20 dB. So you decide to move closer to give the conversation a sound level of 60 dB instead. How close must you come?

Reference no: EM1310350

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