In a circular motion? A) particle cannot have uniform motion B) particle cannot have uniformly accelerated motion C)particle cannot have net force equal to zero D)particle cannot have any force in tangential direction
The question has multiple answers. Please give reasons while you select your answers.
The question has multiple answers. Please give reasons while you select your answers.
1 Answer
A, B (and C - almost always)
Explanation:
The direction of motion keeps on changing - hence A
The direction of the acceleration keeps on changing (even when the speed is uniform the acceleration, though constant in magnitude. is always towards the center - its direction keeps changing) - hence B
Since the acceleration keeps on changing - the net force must keep on changing - and can never be zero throughout. However, consider a body fixed to a point by a rod of length
If the particle is in uniform circular motion, i.e. if it moves at a uniform speed, it will have no tangential force. If the speed changes, it has a tangential acceleration - and has a tangential force.