Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Three particles each of the mass m are placed at the corners of an equilateral triangle of side d and shown in figure. Calculate a the potential energy of the system b work done on this system if the side of the triangle is changed from d to 2d.

Three particles each of the mass m are placed at the corners of an equilateral triangle of side d and shown in figure. Calculate a the potential energy of the system b work done on this system if the side of the triangle is changed from d to 2d.

Calculate the gravitational field intensity and potential at the centre of the base of a solid hemisphere of mass m radius R.