Why does a less dense body when forceful, Physics

Assignment Help:

I have tried to do an experiment where i tried to check the direction of the net force by water on a body. I have some question regarding some concepts. I took an empty sealed bottle and forcefully inserted it in a tub of water completely immersed at a certain depth. Now, as soon as i release my hand from the bottle, the bottle comes up but most amazingly i see that the bottle kind of rotates in the clockwise direction and aligns parallel to the liquid surface and finally floats on the liquid surface. I assumed that the bottle is cylindrical and i tried to calculate the pressure forces (including the weight of the bottle) on all the surfaces of the bottle. I have resolved all these forces in the X- Z direction and found that the net force acts at an angle to the X axis i.e in the X-Z plane. If thats the case, then the bottle should have accelerated in that direction but what i found was that the bottle rotated in the clockwise direction as if there was a net resultant force which acted perpendicular to the axis of the bottle. I am really curious why did the bottle not move in the direction of the net resultant force and moved in a different direction?

Ans)If you suppose the body to be a perfect cylinder, then all pressure forces and weight of the body should balance out to produce a net translational upward force. Though, in non-ideal conditions, the body is not a perfect cylinder and the force you applied is not perfectly perpendicular to the liquids surface. Therefore Bouyoncy acts slightly off the COM to compensate for your imperfect force and therefore produces torque about COM, causing the body to rotate untill it reaches equilibrium (parallel to the surface).


Related Discussions:- Why does a less dense body when forceful

Are end fitting standard, Are end fitting standard? No, end fitting are...

Are end fitting standard? No, end fitting are not standard. Each system manufacturer favors a type of termination for his fibers along with threads, pressure glands, rivets or

Can light is made to move/change along a side emitting optic, Can light is ...

Can light is made to move or change along a side emitting optics? Along with roped or braided multicore fiber and a particular process at the common end optics can be made to c

What point does the beam converge, Q. A beam of light converges at a point ...

Q. A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12 cm from P. At what point does the beam converge if the lens is (a)a convex len

What is an optical fibre, Q. What is an optical fibre and dispersion? Write...

Q. What is an optical fibre and dispersion? Write the expression for angle of deviation.

Define supersonic speed , An object moving with a speed better than the spe...

An object moving with a speed better than the speed of sound is called to be move with a supersonic speed.

Evaluate the period of the vibrating object, Q. A twelve-slit strobe disc i...

Q. A twelve-slit strobe disc is rotated at the max stopping frequency for a vibrating object. The strobe is rotated at 4.0 Hz. (a) Evaluate the period of the vibrating object?

Ac output resistance in common emitter configuration, AC Output Resistance ...

AC Output Resistance in Common Emitter Configuration Ratio  of  change  in collector-emitter voltage (?V CE ) to the change in collector current (?I C ) at constant base curren

Tardon, Tardon A particle that has a positive real mass & travels at a ...

Tardon A particle that has a positive real mass & travels at a speed less than c within all inertial frames.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd