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Machine Design
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Machine Design Miscellaneous
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Machine Design Miscellaneous
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Machine Design
Machine Design Miscellaneous
A ball bearing operating at a load F has 8000 hours of life. The life of the bearing, in hours, when the load is doubled to 2F is
8000
6000
4000
1000
Correct Option:
D
Life ∝
1
(Load)
3
∴ New Life =
8000
= 1000 hours
(2)
3
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