Given below are some regular shaped objects of uniform density. Mark the position of centre of gravity in each of these objects.
Centre of gravity
Position of centre of gravity
i. Uniform rod:
The centre of gravity of a uniform rod will be at the middle point of the rod, where the weight of the uniform rod is average.
ii. Circular disc:
Centre of gravity of the circular disc is at the centre of the disc.
iii. Parallelogram lamina:
Centre of gravity of the parallelogram lamina is at the point of intersection of two diagonals (AC and BD).
iv. Hollow cone:
Centre of gravity of the hollow cone is at a height of one-third of its total height above the base.
v. Triangular lamina:
Centre of gravity of a triangular lamina is at the point of intersection of three medians.
vi. Solid cone:
Centre of gravity of a solid cone is at the point of one-fourth of its total height from the base of the solid cone.