In a steady two-dimensional flow, particle trajectories are given byx(t) =x0cosγt; y(t) =y0sinγta. from these trajectories determine the lagrangian particle velocity componentsu(t) =dx/dtandv(t) =dy/dt. convert these to eulerian velocity componentsu(x, y) andv(x, y). note that the eulerian velocity does not depend on time.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10