To find the distance around a circular disc, multiply the diameter of the disc by 3.14. What is the distance around the disc when the diameter is 18.7 cm?

Calculate the radius of gyration of a circular disc about its diameter.

The radius of gyration of a uniform circular disc of radius R , about any diameter of the disc is

What is the moment of intertia of a circular disc about one of its diameters ?

From a uniform circular disc of diameter D, a circular disc or hole of diameter D//6 and having its centre at a distance of D//4 from the centre of the disc is scopped out. Determine the centre of mass of the remaining portion.

The diameter of two silver discs are in the ratio 2:3. What will be the ratio of their areas?

The figure shows two solid discs with radius R and r respectively. If mass per unit area is same for both, what is the ratio of MI of bigger disc around axis AB (Which is bot to the plane of the disc and passing through its centre) of MI of smaller disc around one of its diameters lying on its plane? Given 'M' is the mass of the larger disc. (MI stands for moment of inertia)

A coin placed on a rotating gramophone disc, remains at rest when it is at a distance of 9 cm from its centre ,the angular velocity of the disc is then tripled .At what distance from the centre ,the coin should be placed , so that it will remain at rest ?