10/19/30 

This blog post is about mechanical machines. A couple examples of inventions of mechanical machines are ovens, phones, computers, cars, etc. The six types of simple machines are the wheel and axle, lever, inclined plane, pulley, screw, and wedge.  A simple machine changes the direction or strength of a force. Work is basically [Force Applied] x [Distance the Object Moved]. Work is measured in joules. Lifting up a bowling ball is 8 N. Rolling a bowling ball up a ramp to the same height is 4 N. Even though this is true, it takes 16 joules to lift it up both 2 meters and rolling it up a ramp. Force is any push or pull and it is measured in newtons. Isaac Newton was born during the year 1642. He was the first scientist that developed the scientific method. He also figured out gravity by applying his thinking of gravity to the solar system. Lastly he discovered the three Laws of Motion and calculus. He found gravity, the three Laws of motion and calculus at his mom’s farm when he escaped the bubonic plague. The first of the three laws of motion are that every object in a state of uniform motion will remain in that state of motion unless an external force acts on it. The second law of motion states force equals mass times acceleration (F = m*a). The last law of motion is for ever action there is an equal and opposite reaction. On Earth, due to gravity, 102 grams exerts the force of 1 newton. 41 pennies exerts the force of 1 newton. 1 N = 102 grams*9.81m/s^2.