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A pile weighing 2000 lb is driven vertically into the ground by a pile-driver hammer weighing 6000 lb which falls freely from rest through a height of 16 ft to the head of the pile. The impact of the hammer on the pile is assumed to be inelastic; the hammer sticks to the pile. The resistance of the ground can be assumed uniform and equivalent to a force of 150,000 lb. Find how far the pile penetrates into the ground at each blow.
a truck travelling along a straight road at speed 20 km/hr increases its speed to 120 hr/hr in time 15 sec.If its acceleration is constant, determine the distance traveled.
a refrigerator compressor compresses 0.5 kgs of saturated r-134a vapor at -10c to 1000 kpa and 40c. the compresser has
explain why the modulus of elasticity of simple thermoplastic polymers such as polyethylene and polystyrene is expected
a piston-cylinder device containing carbon-dioxide gas undergoes an isobaric process from 15 psia and 80of to 200of.
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as the hollow steel g 77 gpa shaft shown rotates at 180 rpm a stroboscopic measurement indicates that the angle of
Write a term paper on Tooling design for composite manufacturing - how tooling is designed for different applications to make composite airplane parts and such.
an airplane heading eastward is observed to be in a 20degree climb at a speed of 1200kmh. at this instant its
calculate the force required in direct extrusion of 1100-o aluminum from a diameternbspof 6 in. to 2 in. assume that
determine the pumpcompressor work input leave as kjkg required to isentropically compress water in part a as a liquid
1. a pump is being used to transfer water from an open tank p1 0 to one having air at 75 psig p2above the water as
a manufacturing firm needs to manufacture cylindrical components on a cnc lathe. the differential between the incoming
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