A flypress has two rotating spheres, each of mass 5 kg, fixed to a horizontal arm, s that they are at a radius of 700 mm from the axis of rotation. When the press is use to punch holes in a metal plate, the initial speed of the arm is 5 rev/s and the speed fal. to 4.5 rev/s during one operation. Find the energy used in the punching stroke and th average force exerted if the plate is 12 mm thick. 2021.N

A flypress has two rotating spheres, each of mass 5 kg, fixed to a horizontal arm, s that they are at a radius of 700 mm from the axis of rotation. When the press is use to punch holes in a metal plate, the initial speed of the arm is 5 rev/s and the speed fal. to 4.5 rev/s during one operation. Find the energy used in the punching stroke and th average force exerted if the plate is 12 mm thick. 2021.N

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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