3:38 PMMaterialsIES EXAMYou3) The ball bearings of a tractor's rearaxle are designed to survive 500,000miles. The tires have a rollingcircumference of 150 inches. Whatis the required life of the bearings incycles?4) The ball bearings in a tractor havea required life L = 1.9 x 10^8 cycles.What is the dimensionless life x?5) The ball bearings in a fullyautonomous pine nut harvester needto have a dimensionless life x = 10under a radial load F = 500 Ibf at90% reliability. What is the requireddynamic load rating of the bearings?6) The ball bearings in a largeagricultural drone need to have adimensionless life x = 50 under aradial load F = 100 lbf at reliability99%. What is the required dynamicload rating of the bearings?7) The ball bearings in an industrialwaffle-making robot have a dynamicload rating of 2500 lbf. They needto support a radial load ofF = 1500Ihf At a reliability R = 75% for howe Type a message

Answered: 3) The ball bearings of a tractor's…

3) The ball bearings of a tractor's rear axle are designed to survive 500,000 miles. The tires have a rolling circumference of 150 inches. What is the required life of the bearings in cycles?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

3:38 PM
Materials
IES EXAM
You
3) The ball bearings of a tractor's rear
axle are designed to survive 500,000
miles. The tires have a rolling
circumference of 150 inches. What
is the required life of the bearings in
cycles?
4) The ball bearings in a tractor have
a required life L = 1.9 x 10^8 cycles.
What is the dimensionless life x?
5) The ball bearings in a fully
autonomous pine nut harvester need
to have a dimensionless life x = 10
under a radial load F = 500 Ibf at
90% reliability. What is the required
dynamic load rating of the bearings?
6) The ball bearings in a large
agricultural drone need to have a
dimensionless life x = 50 under a
radial load F = 100 lbf at reliability
99%. What is the required dynamic
load rating of the bearings?
7) The ball bearings in an industrial
waffle-making robot have a dynamic
load rating of 2500 lbf. They need
to support a radial load ofF = 1500
Ihf At a reliability R = 75% for how
e Type a message

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