A cube of oak wood with very smooth faces normally floats in water. Suppose you submerge it completely and press one face flat against the bottom of a tank so that no water is under that face. Will the block float to the surface? Is there a buoyant force on it? Explain.
A cube of oak wood with very smooth faces normally floats in water. Suppose you submerge it completely and press one face flat against the bottom of a tank so that no water is under that face. Will the block float to the surface? Is there a buoyant force on it? Explain.
A cube of oak wood with very smooth faces normally floats in water. Suppose you submerge it completely and press one face flat against the bottom of a tank so that no water is under that face. Will the block float to the surface? Is there a buoyant force on it? Explain.
Expert Solution & Answer
To determine
The state of the oak when it is completely submerged and press against bottom of a tank so that no water is under that face, and the present of buoyant force acting on the oak.
Explanation of Solution
Section 1:
To determine: The state of the oak when it is completely submerged and press against bottom of a tank so that no water is under that face.
Introduction: The buoyant force is the force exerted by the water on the submerged body.
The cubic oak submerged in water feels an upward exerted force exerted by the water. The exerted force on the oak by the water is known as buoyant force and this force causes the oak to float into the surface. But when the cubic oak is completely submerged under the water and press against the bottom of tank so that no water is under that face, there will be no buoyant force acting on the oak. It is because there is no water present in the bottom surface of the oak to generate buoyant force against it. Thus, the cubic oak will not float to the surface.
Conclusion: Therefore, the cubic oak will not float to the surface when it is completely submerged under the water and press against bottom of tank.
Section 2:
To determine: The present of the buoyant force acting on the cubic oak.
Introduction: The buoyant force is the force exerted by the water on the submerged body.
The buoyant force acting on an object is equal to the weight of the water displaced by the submerged object. But when the cubic oak is completely submerged under the water and press against the bottom of tank so that no water is under that face, there will be no buoyant force acting on the oak. It is because there is no water present in the bottom surface of the oak to generate buoyant force against it.
Conclusion: Therefore, there will be no buoyant force acting on the cubic oak when it is completely submerged under the water and press against bottom of tank.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
3.63 • Leaping the River II. A physics professor did daredevil
stunts in his spare time. His last stunt was an attempt to jump across
a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at
53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower
than the top of the ramp. The river itself was 100 m below the ramp.
Ignore air resistance. (a) What should his speed have been at the top of
the ramp to have just made it to the edge of the far bank? (b) If his speed
was only half the value found in part (a), where did he land?
Figure P3.63
53.0°
100 m
40.0 m→
15.0 m
Please solve and answer the question correctly please. Thank you!!
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.
Chapter 12 Solutions
University Physics with Modern Physics, Books a la Carte Plus Mastering Physics with eText -- Access Card Package (14th Edition)
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.