Apiston having a diameter of 5.97 in. and a length of 9.83 in. slides downward with a velocity v through a vertical pipe. the downward motion is resisted by an oil film between the piston and the pipe wall. the film thickness is 0.002 in., and the cylinder weighs 0.5 lb. estimate v if the oil viscosity is 0.016 lbf- s/ft2. assume the velocity distribution in the gap is linear.]

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

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