Noise pollution is harmful!
A 6 kg source of sound is being pulled towards a stationary observer through a rod of mass 2 kg by applying a force of 35 N on the end of the rod . Find apparent frequency after 4 sec if frequency of sound produced is 10,000 Hz .
Details And Assumptions
• The force is removed after 4 sec
• The surface is smooth
• Take speed of sound as 300 m/s
• Neglect air resistance
• Enter answer upto 2 decimal places with proper estimation.
• Take initial velocity of source as 0 m/s.
• Enter answer in Hertz(Hz)
The answer is 10619.47.
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1 solution
Oho Bro Nice one at yr age!!! It's really awesome .
Just I would suggest to change rope to rod of mass 2 kg , that will explain some logical doubts.
Solution is , find acceleration = 35/8.
Then velocity after 4sec , v = 35/2.
Then apply formula of apparent velocity .. f = 1 0 , 0 0 0 × ( 3 0 0 − 1 7 . 5 3 0 0 )