Question

The effect of a particle in a fluid attaining its terminal velocity is that the?

a. Particle experiences a constant acceleration.
b. Net force acting on the particle becomes zero.
c. Fluid density increases around the particle.
d. Particle undergoes harmonic motion.

Answer 1

The effect of a particle in a fluid attaining its terminal velocity is that the net force acting on the particle becomes zero.

Explanation :

When a particle falls through a fluid, it experiences both a gravitational force and a drag force. As the particle accelerates, the drag force increases until it becomes equal in magnitude and opposite in direction to the gravitational force. At this point, the net force on the particle becomes zero, resulting in a constant velocity called the terminal velocity. This occurs when the drag force acting on the particle becomes equal in magnitude and opposite in direction to the gravitational force, resulting in a constant velocity called the terminal velocity.

This phenomenon is observed in various situations, such as sand particles falling in the ocean, cells falling in a centrifuge, and skydivers falling through the air.