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Center of Mass and Collision question

2014 · Q144
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Center of Mass and Collision question

2014 · Q144

NEETPhysicsCenter of Mass and CollisionMCQ+4 / −1
The force F acting on a particle of mass m is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is :

AIPMT 2014 Physics - Center of Mass and Collision Question 33 English
  1. A
    24 N s
  2. B
    20 N s
  3. C
    12 N s
  4. D
    6 N s
View written solutionFree

Correct answer: C

AIPMT 2014 Physics - Center of Mass and Collision Question 33 English Explanation
Change in momentum = Area under F-t graph in that interval

= Area of $\Delta $ABC – Area of rectangle CDEF + Area of rectangle FGHI

= ${1 \over 2}$ $ \times $ 2 $ \times $ 6 - 3 $ \times $ 2 + 4 $ \times $ 3 = 12 N s
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