Question

A string, 10 cm long and having a mass of 85 g is attached to a...

A string, 10 cm long and having a mass of 85 g is attached to a 180 hz vibrator. the vibration produces a transverse wave with an amplitude of 1.0 mm and propagates with a velocity of 18 m/s. the tension of the string in si units is:

A. 310
B. 290
C. 260
D. 280
E. 300
0 0
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Answer #1

given

m = 0.085 kg

l = 0.1 m

f = 180 Hz

v = 18 m/s

from the relation

v = sqrt(T/m/l)

T = mv^2/l

T = 0.085*18^2/0.1 = 275.4 N

approximately answer is 280 N

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