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External forces...

External forces

A

always balanced

B

never balanced

C

may or may not be balanced

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
When external forces are unbalanced, they cause a change in state of motion or shape
(ii) External balanced force cause no such change e.g book kept on a table Weight of book is balanced by normal upward force. Both are external forces, but balance each other
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MTG IIT JEE FOUNDATION-FORCE AND LAWS OF MOTION-EXERCISE (MULTIPLE CHOICE QUESTIONS)
  1. Balanced forces may………. A body.

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  2. A number of forces acting on a body changes velocity of the body. The ...

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  3. External forces

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  4. A man is standing on a boat in still water. If he walks towards the sh...

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  5. A bullet is fired horizontally and gets embedded in a block kept on a ...

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  6. How much force acts on a body whose momentum is constant

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  7. The principle of conservation of linear momentum states that the linea...

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  8. A person is standing in an elevator. In which situation he finds his w...

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  9. A body, whose momentum is constant, must have constant

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  10. A body of mass m kg starts from rest and travels a distance of s m in ...

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  11. A mass of 100g strikes the wall with speed 5ms^-1 at an angle as shown...

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  12. A rocket of mass 1000 kg exhausts gases at a rate of 4 kg /sec with a ...

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  13. A gun of mass 10kg fires 4 bullets per second. The mass of each bullet...

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  14. the 35 kilogram girl is standing on a 20 kilogram wagon and jumps off....

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  15. 9.8N is equal to

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  16. Displacement time graph of an object of mass 2kg is shown in figure. T...

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  17. Velocity time graph of an object of mass 2kg is shown in figure. The f...

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  18. A car and a motorcycle are moving with the same momentum. When equal r...

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  19. If a constant force acts on a body initially at rest, the distance mov...

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  20. The unit of force in SI system is newton (N) and in CGS system is dyne...

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