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Rotational Motion question

2007 · Q136
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Rotational Motion question

2007 · Q136

NEETPhysicsRotational MotionMCQ+4 / −1
A particle of mass m moves in the XY plane with a velocity v along the straight line AB. If the angular momentum of the particle with respect to origin O is LA when it is at A and LB when it is at B, then AIPMT 2007 Physics - Rotational Motion Question 47 English
  1. A
    LA = LB
  2. B
    the relationship between LA and LB depends upon the slope of the line AB
  3. C
    LA < LB
  4. D
    LA > LB.
View written solutionFree

Correct answer: A

Angular momentum = Linear momentum × perpendicular distance between line of action of liner momentum from origin

Let d be the perpendicular distance.
pA and pB be the linear momentum at A and B

Angular momentum LA = pA × d
LB = pB × d

So, linear momentum will be equal, i.e., LA = LB.here, pA and pB are equal as have equal velocity.

LA = LB

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