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A 20-kg loudspeaker is suspended 2.0 m below the ceiling by two

ropes that are each 30? from vertical.

Find the value of T, the magnitude of the tension in

either of the ropes.

T=

Suppose that the loudspeaker in the problem had a mass of 500 kg

and the ropes hung 20? from the vertical. Into which of the

following intervals would you expect T to fall? You do not

have to calculate Texactly to answer this question; just

make an estimate.

500 to 1000 N 1000 to 2000 N 2000 to 4000 N 4000 to 8000 N 8000 to 16,000 N

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the vertical component of both the tension inrope should be

equal to weight of speaker .

so 2Tcos(30)=20*9.8

T=(10/0.866)*9.8

T=113.092N

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