JEE Main2004PhysicsWork, Power and EnergyActual
A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place in a plane. It follows that
Options
- Aits velocity is constant
- Bits acceleration is constant
- Cits kinetic energy is constant
- Dit moves in a straight line.
Correct answer
C. its kinetic energy is constant
Step-by-step solution
When a force of constant magnitude which is always perpendicular to the velocity of the particle acts on a particle, the work done and hence change in kinetic energy is zero.