Question

write a Terminal Velocity​

Answer 1

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Consider a spherical object falling through a viscous fluid. Forces experienced by it during its downward motion are,

1. Viscous force (Fv), directed upwards.

Its magnitude goes on increasing with increase in its velocity.

2. Gravitational force, or its weight (F_g), directed downwards, and

3. Buoyant force or upthrust (F_u), directed upwards.

Answer 2

As the object falls, the force of gravity initially causes it to continuously speed up as predicted by Isaac Newton. As it gets faster and faster, the air drag force increases until eventually, the air drag force is exactly equal to the force of gravity, and there is no net force acting on the object. If these two forces are exactly balanced, the object will no longer speed up or slow down but will continue falling at a constant velocity, called the terminal velocity.

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