A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 640 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. Assumer = 110 mm, R= 645 mm, 0 = 20°. Detail of contact at B Answer: x= i B G mm
A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 640 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. Assumer = 110 mm, R= 645 mm, 0 = 20°. Detail of contact at B Answer: x= i B G mm
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The number of significant digits is set to 3. The tolerance is +-1 in the 3rd significant digit.
Transcribed Image Text:A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 640 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.
Assumer = 110 mm, R= 645 mm, 0 = 20°
Detail of contact
at B
Answer: x =
i
B
G
mm
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