Navigate

A particle is moving in a circle with uniform speed v. In moving from a point to another

A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point

Options

(a) The momentum changes by mv
(b) The momentum changes by 2mv
(c) The kinetic energy changes by 1/2 mv²
(d) The kinetic energy changes by mv²

Correct Answer:

The momentum changes by 2mv

Explanation:

The diametrically opposite points, the velocities have same magnitude but opposite directions. Therefore, change in momentum is MV – (- MV) = 2MV.

OA2003
admin:

Related Questions

  1. Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
  2. Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
  3. When ₉₀Th²²⁸ transforms to ₈₃Bi²¹², the number of emitted α and β particles
  4. The moderator in a reactor
  5. A cyclotron is used to accelerate