When a fish hovers over the bottom of a lake, what forces act on it, and what is the net force?
A) Lift only, for a net force up.
B) Lift only, for a net force zero.
C) Lift and weight, for a net force up.
D) Lift and weight, for a net force zero.

Question

Quizplus · Accepted Answer

When a fish hovers over the bottom of a lake, both lift and weight forces act on it. The lift force acts upwards, while the weight (due to gravity) acts downwards. For the fish to hover without moving up or down, these forces must be equal and opposite, resulting in a net force of zero.

When a Fish Hovers Over the Bottom of a Lake