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Question
A ball dropped in a liquid with some velocity will slow down due to which of the following forces?
A ball dropped in a liquid with some velocity will slow down due to which of the following forces?
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Solution
The correct option is D All of these
For a ball going downward in a liquid, both upthrust and viscous force will act in the upward direction. Hence, both of them will be responsible for slowing down the ball. The upper layer of water in a water body behaves like a stretched sheet due to surface tension and it does offer some resistance if something is dropped over it. For example, if we drop a thermocol ball over a water surface then before the buoyancy or viscosity acts, the surface tension only would stop it.
All of these
For a ball going downward in a liquid, both upthrust and viscous force will act in the upward direction. Hence, both of them will be responsible for slowing down the ball. The upper layer of water in a water body behaves like a stretched sheet due to surface tension and it does offer some resistance if something is dropped over it. For example, if we drop a thermocol ball over a water surface then before the buoyancy or viscosity acts, the surface tension only would stop it.
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