A rigid body can be replaced by two masses placed at fixed distance ap – McqOptions

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1.	A rigid body can be replaced by two masses placed at fixed distance apart. The two masses form an equivalent dynamic system, if (select the most appropriate answer).
A.	the sum of the two masses is equal to the total mass of the body
B.	the centre of gravity of two masses coincide with that of the body
C.	the sum of the mass moment of inertia of the masses about their centre of gravity is equal to the mass moment inertia of the body
D.	All of the above
Answer» E.

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