What would be the increase in tractive force (negative lift) by the addition of a spoiler to a vehicle. find this for a vehicle traveling at 200 mph and a coefficient of friction between the tires and the ground of 0.6. the density of the air is 0.00238 slugs/ft, the dimensions of the spoiler is 1.5 ft by 4 ft and the lift coefficient is 1.1

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