Q: An arbitrary distance separates two objects of equal mass. If the mass of each object is doubled, and the distance between the two objects is tripled, how will the force of attraction between the two objects change? A: This question regards the gravitational force of attraction that exists between two objects with well-defined massesContinue reading “FORCE AND ACCELERATION: The Gravitational Force of Attraction”
Tag Archives: gravity
KINEMATICS: A Leap of Faith
A man leaps off of a 12m building into a large, 4 meter tall vat of quicksand. The man leaves the roof with a horizontal velocity of 18.0 miles per hour. ( 1.000 mi/hr = 0.4470 m/s ). Q1: A robot on the ground believes that the man is going to miss his mark, andContinue reading “KINEMATICS: A Leap of Faith”
KINEMATICS: What Initial Velocity is Needed to Propel a Projectile Over a Barrier?
Q: The highest barrier that a projectile can clear is 13.7 m, when the projectile is launched at an angle of 10.5° above the horizontal. What is the projectile’s launch speed? A: Recall that a projectile that travels in a curvilinear path has components of motion in the ( x ) and ( y )Continue reading “KINEMATICS: What Initial Velocity is Needed to Propel a Projectile Over a Barrier?”
KINEMATICS: How Far Will a Fired Projectile Travel?
Materials needed: ( 1 ) Spring-loaded cannon; ( 2 ) ruler; ( 3 ) timer The goal will be to determine how far a model cannon’s projectile will travel. First, we will theoretically determine the muzzle velocity ( vm ) of our model cannon. Position the cannon horizontally upon a table. Measure the vertical distanceContinue reading “KINEMATICS: How Far Will a Fired Projectile Travel?”
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?”
ENERGY AND MOMENTUM: Artificial Gravity in a Spinning Spacecraft.
Q: A team of engineers is building a spaceship to go to Jupiter. Their design includes a gravity ring, a spinning section where (in the ring’s reference frame) astronauts are pushed outwards by the centrifugal force. In their current design, the ring has to spin once every ten seconds in order to provide the sameContinue reading “ENERGY AND MOMENTUM: Artificial Gravity in a Spinning Spacecraft.”
RENAISSANCE PHYSICS 