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 thatSelect answersAits magnitude of velocity is constant Bits magnitude of acceleration is constantCits kinetic energy is constant Dit moves in a circular path
Question
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 thatSelect answersAits magnitude of velocity is constant Bits magnitude of acceleration is constantCits kinetic energy is constant Dit moves in a circular path
Solution
The answer to this question is:
A) Its magnitude of velocity is constant: This is true because the force is always perpendicular to the velocity, meaning it doesn't change the speed of the particle, only its direction.
B) Its magnitude of acceleration is constant: This is also true because the force is constant and the force is directly proportional to the acceleration (F=ma).
C) Its kinetic energy is constant: This is true because kinetic energy depends on the speed of the particle, which is constant as per point A.
D) It moves in a circular path: This is true because a constant force that is always perpendicular to the velocity will cause the particle to move in a circular path.
So, all the options A, B, C, and D are correct.
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