Machine Design
The effective stress in wire ropes during normal working is equal to the stress due to

Axial load plus stress due to bending
Acceleration/retardation of masses plus stress due to bending
Bending plus stress due to acceleration/retardation
Axial load plus stress due to acceleration/retardation

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Machine Design
Pitch point of a cam is

Any point on the pitch curve
A point on the pitch curve having maximum pressure angle
Any point on the pitch circle
A point on the pitch curve having minimum pressure angle

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