Four particles A, B, C and D with masses `m_A = m, m_B = 2m, m_C = 3m and m_D = 4m` are at the corners of a square. They have accelerations of equal magnitude with directions as shown. The acceleration of the centre of mass of the particles is:

Four particles A, B, C and D of masses m, 2m, 3m and 4m respectively are placed at corners of a square of side x as shown in Fig. Locate the centre of mass.

Four paticle of masses m_1 = 2 m, m_2 = 4 m, m_3 = m and m_4 are placed at four corners of a square. What should be the value of m_4 so that the centres of mass of all the four particle are exactly at the centre of the square ?

Four particles of masses m, m, 2m and 2m are placed at the corners of a square of side a, as shown in fig. Locate the centre of mass.

In the figure shown, the acceleration of block of mass m_(2) is 2m//s^(2) . The acceleration of m_(1) :

If four different masses m_1, m_2,m_3 and m_4 are placed at the four corners of a square of side a , the resultant gravitational force on a mass m kept at the centre is

If two particles of masses m_(1) and m_(2) are projected vertically upwards with speed v_(1) and v_(2) , then the acceleration of the centre of mass of the system is

Two blocks of masses m_1 and m_2 are connected as shown in the figure. The acceleration of the block m_2 is :

Four particles of masses m, m, 2m and 2m are placed at the four corners of square of side a. Find the centre of mass of the system.

Four particles of masses m, 2m, 3m and 4m are arranged at the corners of a parallelogram with each side equal to a and one of the angle between two adjacent sides is 60^(@) . The parallelogram lies in the x-y plane with mass m at the origin and 4 m on the x-axis. The centre of mass of the arrangement will be located at