Why study rockets?. One could argue that the greatest form of human communication will be with extra-terrestrial life forms. Through space exploration, this form of communication may become a reality. What every good rocket scientist should know. Center of Mass Center of Pressure
1.Using a ruler or pencil, find where your rocket is balanced
2. Mark the COM on your rocket
1 because you are exerting a force farther from the pivot point
Long handled wrenches
B because you are pushing farther from the pivot point (the red hex nut). This is why a long handled wrench can turn a really tight hex nut.
A because you are exerting the force farther from the middle (the pivot point). So fat handled screwdrivers are good for screws that are hard to loosen.
Add weight here to change the COM
If the COP is far from the COM, the same force will twist the rocket back on line better.
“We choose to go to the moon in this decade, and do the other things, not because they are easy, but because they are hard. Because that goal will serve to organize and measure the best of our energies and skills. Because that challenge is one that we’re willing to accept. One we are unwilling to postpone. And one we intend to win, and the others too.”