(a) Given m1 = m,

m2 = m,

v1 = 2v,

v2 = 3v,

EI/E2 = ?

We know that E = 1/2 mv^2, therefore, we have

(b) Total energy = KE + PE

Now, velocity after travelling distance h/2 is

v^2 - u^2 = 2g(h/2)

v^2 = gh

Therefore,

KE = 1/2 mv^2 = 1/2 mgh And

PE = 1/2 mgh

Therefore, total energy

= 1/2 mgh + 1/2 mgh = mgh