Related Questions

The moment of inertia of a circular lamina of diameter ‘d’, about an axis perpendicular to the plane of the lamina and passing through its centre, is
A $$\frac{{\pi {{\text{d}}^4}}}{{12}}$$
B $$\frac{{\pi {{\text{d}}^4}}}{{16}}$$
C $$\frac{{\pi {{\text{d}}^4}}}{{24}}$$
D $$\frac{{\pi {{\text{d}}^4}}}{{32}}$$
E $$\frac{{\pi {{\text{d}}^4}}}{{36}}$$
The center of gravity of a uniform lamina lies at
A The center of heavy portion
B The bottom surface
C The mid point of its axis
D All of the above
The centre of gravity of a plane lamina will not be at its geometrical centre if it is a
A Circle
B Equilateral triangle
C Rectangle
D Right angled triangle
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.
A $$\frac{{{I_{\text{G}}}}}{{{\text{A}}\overline {\text{x}} }}{\text{ below}}$$
B $$\frac{{{I_{\text{G}}}}}{{{\text{A}}\overline {\text{x}} }}{\text{ above}}$$
C $$\frac{{{\text{A}}\overline {\text{x}} }}{{{I_{\text{G}}}}}{\text{ below}}$$
D $$\frac{{{\text{A}}\overline {\text{x}} }}{{{I_{\text{G}}}}}{\text{ above}}$$
The C.G. of a plane lamina will not be at its geometrical centre in the case of a
A Right angled triangle
B Equilateral triangle
C Square
D Circle
Centre of gravity of a solid cone lies on the axis at the height
A One fourth of the total height above base
B One third of the total height above base
C One-half of the total height above base
D Three eighth of the total height above the base
The centre of gravity of a quadrant of a circle lies along its central radius at a distance of
A 0.2 R
B 0.4 R
C 0.3 R
D 0.6 R
Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of
A One-half of the total height above base
B One-third of the total height above base
C One-fourth of the total height above base
D None of these
The centre of percussion is below the centre of gravity of the body and is at a distance equal to
A h / kG
B h.kG
C h2/kG
D k2G/h
The centre of pressure acts __________ the centre of gravity of immersed surface.
A At
B Above
C Below
D None of these

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