Worksheet provided by your instructor to document your answers. 1. A weight of 20,000 lb. is supported on a rectangular base plate that is 8 in. wide
and 3 ft long. The base plate rests on a concrete slab. Determine the stress that the
base plate exerts on the concrete slab. Express your answer in units of (a) lb/in.2
and (b) lb/ft? (precision of 1 for (a) and of 1000 for (b))
© 2012 Project Lead The Way, Inc.
Principles Of Engineering Activity 2.3.1 Stress/Strain Calculations - Page 3

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