Questions
Statements :
a) The motion of the centre of mass can be studied using kepler's laws of motion.
b) The internal forces will not effect the motion of the centre of mass
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Correct option is D
For a system of particles , Fext = M sys . acmIn a system of particles , the particles may interact with each other through gravitational force , electro magnetic force and any other real force . These forces are action - reaction pairs and cancel each other . there internal forces have no contribution to the net external force . Hence statement - (b) is true
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The velocity of the CM of a system changes from to during time = 2s. If the mass of the system is m: l0 kg, the constant force acting on the system is:
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