Question

anyone solve this...

Answer 1

In the first instance , let’s take it that the wire is a straight line sloping downwards . The problem here is that the equation of the line is not known . If it were known then considering equiangular triangles then the heights of P and R can be calculated . Anyway

The total energy apt P equals that at R

At P , PE + KE = PE +KE at R

At P ; mgh[1] + [1/2]mv[1]^2 = mgh[2] + [1/2]mv[2]^2 at R

2gh[1] + v[1]^2 = 2mgh[2] + v[2]^2

v[2]^2 = 2g ( h[1] -h[2]) +25

v[2] = sq rt [ 20 ( h1 - h2 ) +25]

Put the value of both heights ull get the ans!