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A man of mass 50kg is running on a plank of mass 150 kg with a speed of 8m/s relative to the plank as shown [both are initially at rest and the velocity of the mas w.r.t ground any how remains constant), Plank is placed on smooth horizontal surface. The man, while running whistles with frequency f_0 . A detector (D) placed on plank detects frequency. The man jumps off with same velocity from point D and slides on the smooth horizontal surface (Assume mu=0 between plank and horizontal surface]. The speed of sound in still medium is 330 m/s(##AKS_AO_PHY_V02_P3_C01_E02_160_Q01.png" width="80%"> The frequency of sound detected by detector D, after man jumps of the plank |
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Answer» `(332)/(324)f_0` |
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