Class 11

System of Particles and Rotational Motion question bank (Physics)

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Q1.

Where will the centre of mass be located when combining two masses $m$ and $M$ $(M \gt m)$?

(A)
Towards $m$
(B)
Towards $M$
(C)
Between $m$ and $M$
(D)
Anywhere
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Q2.

Two objects of masses $200 \ gm$ and $500 \ gm$ possess velocities $10 \hat{i} \ m/s$ and $3 \hat{i} + 5 \hat{j} \ m/s$ respectively. The velocity of their centre of mass in $m/s$ is

(A)
$5 \hat{i} - \frac{25}{7} \hat{j}$
(B)
$\frac{5}{7} \hat{i} - 25 \hat{j}$
(C)
$5 \hat{i} + \frac{25}{7} \hat{j}$
(D)
$25 \hat{i} - \frac{5}{7} \hat{j}$
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