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Two bodies of masses 2 kg and 4 kg are m...

Two bodies of masses 2 kg and 4 kg are moving with velocities 2 m/s and 10 m/s respectively along same direction. Then the velocity of their centre of mass will be

A

`5.3m//s`

B

`7.3m//s`

C

`6.4m//s`

D

`8.1m//s`

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SL ARORA-System of particles & rotational Motion-EXERCISE
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  2. Consider a sytem of two particles having masses m(1) and m(2). If the ...

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  3. Two bodies of masses 2 kg and 4 kg are moving with velocities 2 m/s an...

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  4. In a bicycle the radius of rear wheel is twice the radius of front whe...

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  5. Two particles A and B initially at rest, move towards each other by mu...

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  6. 2 bodies of different masses of 2 kg and 4 kg are moving with velociti...

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  7. Two racing cars of masses m and 4m are moving in circles of radii r an...

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  8. Two wheels having radii in the ratio 1 : 3 are connected by a common b...

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  9. A disc, initially at rest, starts rotating about its own axis/ with a ...

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  10. A car is moving at a speed of 72 km//h. The diameter of its wheels is ...

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  11. The motor of an engine is rotating about its axis with an angular ...

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  13. The front wheel on an ancient bicycle has radius 0.5 m. It moves with ...

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  14. A ring of radius R is first rotated with an angular velocity omega and...

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  15. Which one is a vector quantity?

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  16. If force vector is along X-axis and radius vector is along Y-axis then...

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  17. Find the torque of a force vecF= -3hati+hatj+5hatk acting at the poin...

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  18. If force acts on a body, whose line of action does not pass through it...

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  19. Can the couple acting on a rigid body produce translatory motion ?

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  20. In order to balance a see-saw of total length 10.0m, two kids weighing...

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