Where does the centre of gravity of a sphere and triangular lamina lie?

Where does the center of gravity of the atmosphere of the earth lie? (AS_(2))

Write short note on centre of Gravity.

Find the centre of mass of a triangular lamina.

Statement-1 : The centre of mass and centre of gravity of a body are two different positions in general. and Statement-2 : The centre of mass and centre of gravity of a body coincide if graviational field is unifrom.

The distance between the point of suspension and the centre of gravity of a compound pendulum is l and the radius of gyration about the horizontal axis through the centre of gravity is k , then its time period will be

From a uniform disk of radius R, a circular hole of radius R/2 is cut out. The centre of the hole is at R/2 from the centre of the original disc. Locate the centre of gravity of the resulting flat body.

Where does the acceleration due to gravity is larger, equator or poles of the earth? Why?