Cool Dudes of Science!
... Leaning Tower of Pisa, one 10x heavier than the other. What would Aristotle have predicted? The two balls hit at the same time!! ...
... Leaning Tower of Pisa, one 10x heavier than the other. What would Aristotle have predicted? The two balls hit at the same time!! ...
Newton*s First and Second Laws of Motion
... • Aristotle incorrectly proposed that force is required to keep an object moving at constant speed. ...
... • Aristotle incorrectly proposed that force is required to keep an object moving at constant speed. ...
Copernicus, Galileo, Kepler`s laws of planetary motion, Newton`s
... • Third law: For every action, there is an opposite and equal reaction ...
... • Third law: For every action, there is an opposite and equal reaction ...
Forces
... Relate force to motion. In a nutshell: Law 1: An object’s velocity doesn’t change unless acted upon by a net force. Law 2: The acceleration of an object upon which a force is acting depends on the amount of net force being applied and on the mass of the object. Law 3: For every force, ther ...
... Relate force to motion. In a nutshell: Law 1: An object’s velocity doesn’t change unless acted upon by a net force. Law 2: The acceleration of an object upon which a force is acting depends on the amount of net force being applied and on the mass of the object. Law 3: For every force, ther ...
Universal Gravitation
... This relationship states that the force of attraction is directly proportional to each of the two masses and inversely proportional to the distance squared between the point masses. The gravitational constant G has a value of 6.673 x 10-11 N*m2/kg2. The inverse square relationship means that as the ...
... This relationship states that the force of attraction is directly proportional to each of the two masses and inversely proportional to the distance squared between the point masses. The gravitational constant G has a value of 6.673 x 10-11 N*m2/kg2. The inverse square relationship means that as the ...
EFFECT OF CENTRIFUGAL AND CORIOLIS FORCES DUE TO
... with constant angular velocity ω about its polar axis, then: ...
... with constant angular velocity ω about its polar axis, then: ...
Chapter 6 Forces and Motion
... Terminal Velocity- The constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity. Free fall - the motion of a body when only the force of gravity is acting on the body. Projectile motion- the curved path that an obj ...
... Terminal Velocity- The constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity. Free fall - the motion of a body when only the force of gravity is acting on the body. Projectile motion- the curved path that an obj ...
Newtons 2nd law
... is a force, and is measured in Newtons. • The force of gravity causes all objects near Earth’s surface to fall with an acceleration of 9.8 m/s². • Your weight on Earth is the gravitational force between you and Earth. ...
... is a force, and is measured in Newtons. • The force of gravity causes all objects near Earth’s surface to fall with an acceleration of 9.8 m/s². • Your weight on Earth is the gravitational force between you and Earth. ...
Lec12
... squeezed as they move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
... squeezed as they move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
1 Newton`s Law of Universal Gravitation (Ch 13) Law of Gravitation
... G is the universal gravitational constant G = 6.673 x 10-11 N⋅m2 / kg2 ...
... G is the universal gravitational constant G = 6.673 x 10-11 N⋅m2 / kg2 ...
Forces can change the direction of motion.
... Mass is also a variable in Newton’s second law. If the same force acts on two objects, the object with less mass will have the greater acceleration. For instance, if you push a soccer ball and a bowling ball with equal force, the soccer ball will have a greater acceleration. If objects lose mass, th ...
... Mass is also a variable in Newton’s second law. If the same force acts on two objects, the object with less mass will have the greater acceleration. For instance, if you push a soccer ball and a bowling ball with equal force, the soccer ball will have a greater acceleration. If objects lose mass, th ...
P5.28 (p.138)
... remains in uniform motion (or at rest) unless acted upon by a net external force. acceleration due to Earth’s rotation 0.03 m/s2 acceleration due to Earth’s orbit 0.006 m/s2 acceleration due to Sun’s orbit 2 x 10-10 m/s2 ...
... remains in uniform motion (or at rest) unless acted upon by a net external force. acceleration due to Earth’s rotation 0.03 m/s2 acceleration due to Earth’s orbit 0.006 m/s2 acceleration due to Sun’s orbit 2 x 10-10 m/s2 ...
Newton`s Laws - Dr. Robert MacKay
... Law of inertia (Newton’s 1st Law) • Every object continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed ...
... Law of inertia (Newton’s 1st Law) • Every object continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed ...
Forces
... You have a mass of 75 kg and are standing on a bathroom scale in an elevator. The elevator accelerates from rest at a rate of 2.0 m/s2 for 2 s and then continues at constant speed. 1. What is the scale reading during acceleration? 2. How does this reading compare to that of the scale at rest? 3. How ...
... You have a mass of 75 kg and are standing on a bathroom scale in an elevator. The elevator accelerates from rest at a rate of 2.0 m/s2 for 2 s and then continues at constant speed. 1. What is the scale reading during acceleration? 2. How does this reading compare to that of the scale at rest? 3. How ...
Modified Newtonian dynamics
In physics, modified Newtonian dynamics (MOND) is a theory that proposes a modification of Newton's laws to account for observed properties of galaxies. Created in 1983 by Israeli physicist Mordehai Milgrom, the theory's original motivation was to explain the fact that the velocities of stars in galaxies were observed to be larger than expected based on Newtonian mechanics. Milgrom noted that this discrepancy could be resolved if the gravitational force experienced by a star in the outer regions of a galaxy was proportional to the square of its centripetal acceleration (as opposed to the centripetal acceleration itself, as in Newton's Second Law), or alternatively if gravitational force came to vary inversely with radius (as opposed to the inverse square of the radius, as in Newton's Law of Gravity). In MOND, violation of Newton's Laws occurs at extremely small accelerations, characteristic of galaxies yet far below anything typically encountered in the Solar System or on Earth.MOND is an example of a class of theories known as modified gravity, and is an alternative to the hypothesis that the dynamics of galaxies are determined by massive, invisible dark matter halos. Since Milgrom's original proposal, MOND has successfully predicted a variety of galactic phenomena that are difficult to understand from a dark matter perspective. However, MOND and its generalisations do not adequately account for observed properties of galaxy clusters, and no satisfactory cosmological model has been constructed from the theory.