Applied Mechanics and Graphic Statics
Which of the following represents the state of neutral equilibrium?

A smooth cylinder lying on a convex surface
A smooth cylinder lying on a curved surface
None of these
A cube resting on one edge

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Applied Mechanics and Graphic Statics
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

Is equal to the sum of their velocities of approach
Is inversely proportional to their velocity of approach
Bears a constant ratio to their velocity of approach
Is directly proportional to their velocity of approach

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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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