Inertia and Iris

In this spectacular gif one can witness the inertia of the fluid in the eye that is still motion even after the eye has stopped moving. Can’t get better than that!

There is always the case when the forces acting on the body cancel out each other and the net force acting on the object becomes zero. At those times, the body stays at rest ( or moves at constant velocity )

Have a great day!

Story of Newton’s laws

                                                   Source

A cow was walking … NEWTON stopped it .. it stopped walking…. He found his 1st law that “An object continues to move unless it is stopped…”

He gave a force by kicking the cow … It gave a sound “MA” … He found 2nd law of motion “F=MA" 

After that cow gave a kick to Newton ,then he found 3rd law of motion…. "Every action has an equal and opposite reaction”.. 😛

– High school Physics teacher

EDIT: Obviously this is not the way things went, but it works great as a tool to remember them.

Chain Reaction.

fuckyeahphysica:

Everyone knows that a line of standing dominos creates a fun chain reaction when you knock the first one over; but did you know you can use increasingly larger dominos and get the same result? 

The setup.

Professor Stephen Morris knocks over a 1-meter tall domino that weighs over 100 pounds by starting with a 5mm high by 1mm thick domino.He uses a size ratio of 1.5, meaning each domino is one and a half times larger than the last one. This is the generally accepted maximum ratio that dominos can have to successfully knock each other over.

Hans Van Leeuwen of Leiden University in the Netherlands, published a paper online showing that, theoretically, you could have a size ratio of up to two. But that’s in an ideal (and probably unrealistic) situation.

Fun fact.

There are 13 dominoes in this sequence. If Professor Morris used 29 dominoes in total, with the next one always being 1.5x larger, the last domino would be the height of the Empire State Building.

Source: Physics Buzz.