interestin problem

again not redable [2]...bhai jitne solve kiye hein unke answers to verify karlo!...n post a LARGER IMAGE!

B) \frac{4\pi r}{u}

mu = 2mV₂ + mV₁

1/2 = (V₂ - V₁)/u

V₂ = 0.5u

V₁=0

Time period = \frac{2\pi }{w} = \frac{2\pi }{\frac{u}{2r}} = \frac{4\pi r}{u}

nice eyes ashish![1][3]

yup vm ts9 question...ws not able 2 solve them... da ones wich i did incorrect.. i am posting here!!!!!