Two steel spheres of radius 2 cm and 5 cm are made to touch each other. What is the distance of their centre of mass from their point of contact ?

Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are placed in touch . The distance of the centre of mass from the first sphere is

A circular hole is cut from a disc of radius 6 cm in such a way that the radius of the hole is 1 cm and the centre of 3 cm from the centre of the disc. The distance of the centre of mass of the remaining part from the centre of the original disc is

Four identical spheres each of radius 10 cm and mass 1 kg are placed on a horizontal surface touching one another so that their centres are located at the corners of square of side 20 cm. What is the distance of their centre of mass from centre of either sphere ?

Two circles of radii 10 cm and 17 cm . Intersecting each other at two points and the distances between their centres is 21 cm . Find the length of the common chords.

Circles with radii 3, 4 and 5 touch each other externally. If P is the point of intersection of tangents to these circles at their points of contact, then if the distance of P from the points of contact is lambda then lambda_2 is _____

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10V . The potential at the distance 3 cm from the centre of the sphere is:

The lengths of two parallel chords of a circle are 6 cm and 8 cm. If the smaller chord is at distance 4 cm from the centre, what is the distance of the other chord from the centre?

Three identical spheres each of radius .R. are placed touching each other so that their centres A, B and C lie on a straight line. The position of their centre of mass from A is

Find distance of centre of mass of solid hemisphere of radius 8cm from centre

Find distance of centre of mass of solid hemisphere of radius 8cm from centre