why do some things sink?

the weight of the body applies downward force on the water molecules
and according to newton's 3rd law of motion there is a equal opposite reaction force
so the both get balanced out so now the only force acting on the object is the upthrust so there's no downward force so why do some things sink?

Answer 1

The object which is more dense than the fluid sinks in that fluid.

This is related to Archimedes principle.

A body experiences buoyant force when submerged in a liquid.

because of the fluid, which is equivalent to the fluid's weight that it has displaced.

When an object's weight surpasses the buoyant force, the

item submerges in that liquid.

The buoyant force on the object is given by #F#
#F = V_b.D_f.g#

where :-

#1) V_b # is the Volume of body inside the fluid.
#2) D_f# is the Density of that fluid.
#3)# # g# is the acceleration due to gravity.
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Answer 2

Objects sink if their density is greater than the density of the fluid they are placed in.

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Answer 3

Some things sink due to their density being greater than the density of the fluid they are placed in. This causes them to displace a volume of fluid equal to their weight, resulting in a net downward force and causing them to sink.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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