Asked by Tony
Workers attach a 25.0 kg mass to one end of a 20.0 m long crane, suspending the mass in midair. If the cable has a mass of 12.0 kg, determine the speed of transverse wave at the middle and bottom end of the cable.
Answers
Answered by
bobpursley
Tension is not uniform on the cable, due to weight being distributed. So speed along the cable is not uniform...
at the bottom: tension=(20*12)*9.8 N
at the middle: tension=(20+6)*(9.8)N
mass per length (m/l)= 12/20=.6kg/meter
speed= sqrt (tension/(m/L))
at the bottom: tension=(20*12)*9.8 N
at the middle: tension=(20+6)*(9.8)N
mass per length (m/l)= 12/20=.6kg/meter
speed= sqrt (tension/(m/L))
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