A uniform rope of length 12 mm and mass 6 kg hangs vertically from a rigid support. A block of mass 2 kg is attached to the free end of the rope. A transverse pulse of wavelength 0.06 m is produced at the lower end of the rope. What is the wavelength of the pulse when it reaches the top of the rope?

Options

A. 12
B. 3
C. 9
D. 6

Answer

A

Explanation

`mu = 6/(12) = 1/2 kg //m `
` A to V = sqrt((T)/(mu )) = f lamda`
` B to sqrt((T.)/(mu ))= f lamda.`
` sqrt((T)/(T.))=(lamda)/(lamda .)`
` sqrt((20 )/(80)) = (6)/( lamda.)= lamda.=12`