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Q.

A person applies a constant force F on a particle of mass ‘m’ and finds that the particle moves in a circle of radius ‘r’ with a uniform speed ‘v’. Choose correct statements
A) this is not possible
B) there are other forces also on the particle
C) the resultant of other forces is  mv2/r  towards centre
D) the resultant of the other forces varies in magnitude as well as direction

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a

B, C 

b

only A

c

All are correct

d

B, D 

answer is C.

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Detailed Solution

Net force acting on the particle in uniform circular motion is  MV2R

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A person applies a constant force F→ on a particle of mass ‘m’ and finds that the particle moves in a circle of radius ‘r’ with a uniform speed ‘v’. Choose correct statementsA) this is not possibleB) there are other forces also on the particleC) the resultant of other forces is  mv2/r  towards centreD) the resultant of the other forces varies in magnitude as well as direction