1.A sonometeris set on the floor of a lift.when the lift is at rest,the sonometer wire vibrates with fundamental frequency 256hz.when the lift goes up with acceleration a=9g/16, the frequency of vibration of the same wire changes to --------- Share with your friends Share 4 Pratyay Ghosh answered this f=12lTμ⇒256=12lMgμ Inside the moving lift f1=12lT1μ=12lMg+aμ=12lMg+9g16μ⇒f1=5412lMgμ=54×256=320 Hz therefore, frequency of the wire changes to 320 Hz 3 View Full Answer