Kelvi

A uniform rope of length L L and mass m1 m_1 hangs vertically from a rigid support. A block of mass m2 m_2 is attached to the free end of the rope. A transverse pulse of wavelength λ1 \lambda_1 is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is λ2. \lambda_2. The ratio λ2λ1 \frac{\lambda_2}{\lambda_1} is

hard
Waves
2016
physics
1. 

m2m1\sqrt{\frac{m_2}{m_1}}

2. 

m1+m2m1\sqrt{\frac{m_1 + m_2}{m_1}}

3. 

m1m2\sqrt{\frac{m_1}{m_2}}

4. 

m1+m2m2\sqrt{\frac{m_1 + m_2}{m_2}}

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