The weight of a person in air is 69kg, but weight of the same person in water may be 49kg,i.e. there is loss of weight due to ________ force.
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Answer:
due to buoyancy force exerted by water against person's weight .
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Option C: - buoyancy
Explanation:
- Based on the definition of weight, that is defined in physics, the formula is Weight=Mass times the "force of acceleration" because of gravity, as such objects do not "weigh less" in water. They actually are the same weight as on dry land because of gravity acting at a "constant acceleration" on the mass of the object.
- However, items "appear" in water to weigh less. This is because of the the buoyancy concept. Buoyancy is in effect the increasing force of a "liquid" that acts on an object which is placed within it . This force, known as the buoyancy force, is proportional to the weight of water displaced by the item. This is referred to as the "theory of Archimedes". This theory helps , if one knows the density of water and the length, and mass & volume of the subject can measure the "apparent mass" of an object ""under water.
To know more
Does the force of buoyancy acts on the body if it sinks. If yes then how
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