A particle is moving along the path given by y=Ct66 where C is a positive constant. The relation between acceleration (a) and the velocity of the particle at t=5s is given by a=ηv, then the value of 5η is
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Solution
Given; y=Ct66 Differentiating once w.r.t. time, Velocity =v=dydt=Ct5 Differentiating once more w.r.t. time, Acceleration =a=dvdt=5Ct4⇒av=5t=η ⇒η=1(∵t=5) ⇒5η=5