Applied Mechanics and Graphic Statics
The tension in a cable supporting a lift

Is more when the lift is moving downwards
Is less when the lift is moving upwards
Is less when the lift is moving downwards
Remains constant whether its moves downwards or upwards

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Applied Mechanics and Graphic Statics
A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If ‘r’ is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be

[r (π - 0.5)]/(π + 0.25)
[r (π + 0.25)]/(π + 0.5)
[r (π + 0.25)]/(π - 0.5)
[r (π - 0.25)]/(π - 0.5)

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