The aluminum column has a rectangular cross section and supports an axial load P. The base of the column is fixed. The support at the top allows rotation of the column in the x-y plane (i. e., bending about the strong axis) but prevents rotation in the x-z plane (i. e., bending about the weak axis).

(a) Determine the critical buckling load of the column for the following parameters: L = 54 in., b = 0.4 in., h = 0.8 in., and E = 10100 ksi.
(b) Determine the ratio b/h for which the critical buckling load about both the strong and weak axes is the same.

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

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

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux