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Centripetal Force
Centripetal Force

... In classical mechanics, the dynamics of a point particle are described by Newton’s 2nd law, F~ = m~a, where F~ is the net force, m is the mass, and ~a is the acceleration. This equation guarantees that F~ and ~a are parallel to each other. If ~v is the velocity, by definition ~v is always parallel t ...
key - Scioly.org
key - Scioly.org

Name
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Force - Edublogs
Force - Edublogs

... something MUST be pushing on it. Things don’t move all by themselves! Aristotle ...
DimensionsUnits
DimensionsUnits

Chapter 4 Force Lecture Notes
Chapter 4 Force Lecture Notes

... Also called the ‘Law of Inertia’ Inertia: Resistance to changes in motion. Stated: An object at rest will stay at rest and an object in motion will tend to stay in motion unless acted upon by some ‘net external force’. Net external force: the sum of all the vector forces acting on an object. ...
PES 1120 Spring 2014, Spendier Lecture 2/Page 1 Lecture
PES 1120 Spring 2014, Spendier Lecture 2/Page 1 Lecture

m - Cloudfront.net
m - Cloudfront.net

Lecture-07-09
Lecture-07-09

Question (1340001) Solution
Question (1340001) Solution

... Note that the gravitational force points to the left and upward. This is the direction from the planet toward the star, which is consistent with the fact that gravitational force is attractive. A picture of the gravitational force on the planet is shown below. Note that the direction of the gravitat ...
Chapter 4 PP
Chapter 4 PP

... Different objects • Action-Reaction forces do not cancel out because they act on different objects • Two forces acting on the same object can cancel out each other producing a net force of zero • ∑F=0 ...
Free-body Diagrams
Free-body Diagrams

Benchmark 1 Study Questions SOLUTIONS
Benchmark 1 Study Questions SOLUTIONS

Forces Class Notes - Hicksville Public Schools
Forces Class Notes - Hicksville Public Schools

Teaching Forces and Motion with Confidence I.O.P day @ Rugby
Teaching Forces and Motion with Confidence I.O.P day @ Rugby

... bullet moves. If he shoots at or above the monkey, won’t the bullet whiz over its head as the monkey falls toward the ground? But that's wrong. The correct answer is 2: Aim directly at the monkey. Once the bullet exits the gun, there’s only one force acting on it with any significance: gravity (and ...
Chapter 6 Section 2 Newton`s Laws of Motion
Chapter 6 Section 2 Newton`s Laws of Motion

... 4. A golf ball and ping pong ball are dropped at the same time. Notice how the golf ball (more mass) takes longer to start accelerating but catches up at the end. ...
Circular Motion Questions
Circular Motion Questions

... 26. A 4.0 kg mass is attached to one end of a rope 2 m long. If the mass is swung in a vertical circle from the free end of the rope, what is the tension in the rope when the mass is at its highest point if it is moving with a speed of 5 m/s? (A) 5.4 N (B) 10.8 N (C) 50 N (D) 65.4 N 27. A ball of m ...
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Work

Lecture 04.v2.9-6-12..
Lecture 04.v2.9-6-12..

... W = Fd cos. Work is a scalar. We can determine work two ways: Work is the 1) component of force in the direction of displacement times the magnitude of displacement. 2) component of displacement in the direction of the force times the magnitude of the force. ...
Ch 6 ppt
Ch 6 ppt

... • Force Pairs Do Not Act on the Same Object A force is always exerted by one object on another object. This rule is true for all forces, including action and reaction forces. • Action and reaction forces in a pair do not act on the same object. If they did, the net force would always be 0 N and noth ...
FACULTY OF SCIENCE SAMPLE FINAL EXAMINATION PHYSICS 198-101A (2000) MECHANICS AND WAVES
FACULTY OF SCIENCE SAMPLE FINAL EXAMINATION PHYSICS 198-101A (2000) MECHANICS AND WAVES

pulley
pulley

Circular Motion
Circular Motion

... on the smaller circular path is A. the same as The answer is D. The centripetal force needed B. one fourth of to maintain the circular motion of an object is inversely proportional to the radius of the circle. C. half of Everybody knows that it is harder to navigate a ...
AP-C Physics
AP-C Physics

... (A) (mg + Tsin) (B) (mg-Tsin) (C) (mg+ Tcos) (D) (mg-Tcos) (E) mg ...
Document
Document

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Gravity

Gravity or gravitation is a natural phenomenon by which all things with mass are brought towards (or 'gravitate' towards) one another including stars, planets, galaxies and even light and sub-atomic particles. Gravity is responsible for the complexity in the universe, by creating spheres of hydrogen, igniting them under pressure to form stars and grouping them into galaxies. Without gravity, the universe would be an uncomplicated one, existing without thermal energy and composed only of equally spaced particles. On Earth, gravity gives weight to physical objects and causes the tides. Gravity has an infinite range, and it cannot be absorbed, transformed, or shielded against.Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915) which describes gravity, not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass/energy; and resulting in time dilation, where time lapses more slowly in strong gravitation. However, for most applications, gravity is well approximated by Newton's law of universal gravitation, which postulates that gravity is a force where two bodies of mass are directly drawn (or 'attracted') to each other according to a mathematical relationship, where the attractive force is proportional to the product of their masses and inversely proportional to the square of the distance between them. This is considered to occur over an infinite range, such that all bodies (with mass) in the universe are drawn to each other no matter how far they are apart.Gravity is the weakest of the four fundamental interactions of nature. The gravitational attraction is approximately 10−38 times the strength of the strong force (i.e. gravity is 38 orders of magnitude weaker), 10−36 times the strength of the electromagnetic force, and 10−29 times the strength of the weak force. As a consequence, gravity has a negligible influence on the behavior of sub-atomic particles, and plays no role in determining the internal properties of everyday matter (but see quantum gravity). On the other hand, gravity is the dominant force at the macroscopic scale, that is the cause of the formation, shape, and trajectory (orbit) of astronomical bodies, including those of asteroids, comets, planets, stars, and galaxies. It is responsible for causing the Earth and the other planets to orbit the Sun; for causing the Moon to orbit the Earth; for the formation of tides; for natural convection, by which fluid flow occurs under the influence of a density gradient and gravity; for heating the interiors of forming stars and planets to very high temperatures; for solar system, galaxy, stellar formation and evolution; and for various other phenomena observed on Earth and throughout the universe.In pursuit of a theory of everything, the merging of general relativity and quantum mechanics (or quantum field theory) into a more general theory of quantum gravity has become an area of research.
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