Mine cage of mass 4t is to be raised with an acceleration of 1.5 m/s by a rope passing over a hoist drum of 1.5 m diameter. What is the power required when the load has reached a velocity of 6 m/s, neglecting the inertia of of the drum and the weight of the rope, but allowing for a bearing friction torque of 3kN m at the drum. What is the power required at a uniform velocity of 6 m/s

Mine cage of mass 4t is to be raised with an acceleration of 1.5 m/s by a rope passing over a hoist drum of 1.5 m diameter. What is the power required when the load has reached a velocity of 6 m/s, neglecting the inertia of of the drum and the weight of the rope, but allowing for a bearing friction torque of 3kN m at the drum. What is the power required at a uniform velocity of 6 m/s

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 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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