Buoyancy
- The
force of the water pushing upward on the
canoe is very important. Without it, your
canoe would sink!
- According to Randall D. Knight
on page 369 of Physics for Scientists and
Engineers: A Strategic Approach with modern
physics (4th Edition), "This net upward force of
a fluid is called the buoyant force."
- Water is a fluid and a liquid,
but not all fluids are liquids. A Plus
Physics describes a fluid as, "matter
that flows under pressure, which includes
liquids, gases, and even plasmas."
- The net buoyant force of a fluid
(water in this case) is equal to the upward
force of the water minus the downward force of
the water. This net buoyant force can also be
found by multiplying the fluid's density by the
volume of the fluid that is displaced by the
water and then multiplying this quantity by the
acceleration due to gravity.
- When the net buoyant force is
equal to the gravitational force, the canoe will
float at that point.
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