Tag Archives: diameter

ROTATIONAL MOTION: What Distance Separates Two Projectiles Revolving Around a Common Center of Mass?

Q: Two projectiles separated by distance ( dt ) revolve around their center of mass ( cm = ½ dt ). Each projectile has a mass ( m ) of 4.81 x 1020 kg, and they have an instantaneous rotational speed ( ⍵ ) of 1.25 x 10-10 rad/s relative to the center of mass.Continue reading “ROTATIONAL MOTION: What Distance Separates Two Projectiles Revolving Around a Common Center of Mass?”

MATHEMATICS: Radius, Radians, Diameter, Circumference, and ” Pi ” = 3.14

C = 2πR.  What does this mean?  What is its usefulness?  C = The distance around any circle.  But where did such a formula come from?  Start by drawing a circle.  Within the middle of the circle, draw a dot.  Now, draw a line that passes through the dot.  This line should divide the circleContinue reading “MATHEMATICS: Radius, Radians, Diameter, Circumference, and ” Pi ” = 3.14″

MATHEMATICS: Is The Earth Really Round?

Disclaimer: The earth, according to current mathematical models and observations, is not flat. ROUND-EARTH MATHEMATICS : In determining the rotational speed of the earth, we must first assume that the sun is positioned an exceptionally far distance from the earth.  If this were not the case, snow, water, and complex biological life would be non-existent.Continue reading “MATHEMATICS: Is The Earth Really Round?”