The velocities of three particles of masses 20 {\g}, 30 {\g} and 50 {\g} are 10 \stackrel{\^}{\bo {i}}, 10 \stackrel{\^}{\bo {j}} and 10 \stackrel{\^}{\bo {k}}, respectively. The velocity of the centre of mass of the three particles is

Correct Answer is : 2^i+3^j+5^k

2 \stackrel{\^}{\bo {i}}+3 \stackrel{\^}{\bo {j}}+5 \stackrel{\^}{\bo {k}}

10(\stackrel{\^}{\bo {i}}+\stackrel{\^}{\bo {j}}+\stackrel{\^}{\bo {k}})

20 \stackrel{\^}{\bo {i}}+30 \stackrel{\^}{\bo {j}}+5 \stackrel{\^}{\bo {k}}

2 \stackrel{\^}{\bo {i}}+30 \stackrel{\^}{\bo {j}}+50 \stackrel{\^}{\bo {k}}

EAMCET Engineering 2001 Solved Paper

Section: Physics

Question : 38 of 200

Marks: +1, -0

The velocities of three particles of masses 20g, 30g and 50g are 10

,10

and 10

, respectively. The velocity of the centre of mass of the three particles is

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