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Repeat Problem 1.61 except change the punch force to 10,000 N, stroke to 50 mm, and drive shaft speed to 900 rpm.
Problem 1.61
A punch press with flywheel adequate to minimize speed fluctuations produces 120 punching strokes per minute, each providing an average force of 2000 N over a stroke of 50 mm. The press is driven through a gear reducer by a shaft rotating 300 rpm. Overall efficiency is 80%.
(a) What power (W) is transmitted through the shaft?
(b) What average torque is applied to the shaft?
The acid digestion test left 2.595 g of fiber from a composite specimen weighing 3.697 g. The composite specimen weighs 1.636 g in water. If the specific gravity of the fiber and matrix is 2.5 and 1.2, respectively
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Four kilograms of water initially at 200 degree Celsius and 0.5 MPa undergo an isothermal, internally reversible compression process to the saturated liquid state. Determine the work and heat transfer involved in the process (in kJ). Sketch the proce..
An end milling operation is carried out along a straight line path that is 325 mm long. The cut is in a direction parallel to the x-axis on an NC machining center. Cutting speed = 30 m/min and chip load = 0.06 mm.
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On the average, use simulation to find the average amount of money you will win or lose on each play of the game.
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