Question

The distance between two particles of masses 2 kg and 4 kg is r. Their distances from

the centre of mass of the system are r1 and r2 respectively. Then, r1r2

Answer 1

Answer:

Given, Two masses M1=4kg,m2=2kg

So the net force at the point is:

F=m1g−m2g=4g−2g=2×10=20N

Acceleration on the center of mass is:

a=m1+m2F=2+420=310m/s2

a) Distance traveled in 9s

S=21at2=21×310×92=135m

b) The Speed of the CoM in 9s

Answer 2

the spead COM in 9sec

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