A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 670 kg and an average gear-tooth force of 1.95 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset of the center of mass G of the sand from the vertical centerline. Neglect all friction in the supporting rollers. Assume r = 155 mm, R = 695 mm, 0 = 17° Detail of contact at B Answer: x = i B R mm

A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 670 kg and an average gear-tooth force of 1.95 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset of the center of mass G of the sand from the vertical centerline. Neglect all friction in the supporting rollers. Assume r = 155 mm, R = 695 mm, 0 = 17° Detail of contact at B Answer: x = i B R mm

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 7.72P

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