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A person applies a constant force vecF o...

A person applies a constant force `vecF` on a particle of mass m and finds tht the particle movs in a circle of radius r with a uniform speed v as seen from an inertial frame of reference.

A

This is not possible.

B

There are other forces on the particle.

C

The resultant of the other forces is `mv^(2)//r` towards the center.

D

The resultant of the other forces varies in magnitude as well as in direction.

Text Solution

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The correct Answer is:
B, D
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Knowledge Check

  • A particle of mass m is moving on a circular path of radius r with uniform speed v , rate of change of linear momentum is

    A
    Zero
    B
    Independent of speed
    C
    Proportional to radius r
    D
    Proportional to `v^(2)`

  • If a particle covers half the circle of radius R with constant speed then

    A
    Momentum change is mvr
    B
    Change in K.E is `1//2 mv`
    C
    Change in K.E is mv
    D
    Change in K.E is zero

  • A particle of mass M is moving in a horizontal circle of radius R with uniform speed V. When it moves from one point to a diametrically opposite point, its

    A
    Kinetic energy changes by `MV^(2)//4`
    B
    Momentum does not change
    C
    Momentum changes by 2 MV
    D
    Kinetic energy changes by `MV^(2)`