Chapter 6
... These forces are equal in magnitude but opposite in direction. If the bucket is in equilibrium, the net force must be zero! So the tension on the top of the rope must be the weight of the bucket. Tug of war example. ...
... These forces are equal in magnitude but opposite in direction. If the bucket is in equilibrium, the net force must be zero! So the tension on the top of the rope must be the weight of the bucket. Tug of war example. ...
Chapter1
... Dimensional consideration Newton’s law Mass and Weight Significance of numerical results ...
... Dimensional consideration Newton’s law Mass and Weight Significance of numerical results ...
The kinematics of Galaxies in Compact Groups
... most have peculiar rotation curves + dynamical properties of the galaxies do not correlate with any galaxy/group parameter. 2) Rubin et al. (1991) studied 32 galaxies – found that 2/3 have peculiar rotation curves. They found a large offset of the TF relation with respect to the field relation in th ...
... most have peculiar rotation curves + dynamical properties of the galaxies do not correlate with any galaxy/group parameter. 2) Rubin et al. (1991) studied 32 galaxies – found that 2/3 have peculiar rotation curves. They found a large offset of the TF relation with respect to the field relation in th ...
Chapter one A. Lecturer Saddam K. Kwais Introduction to statics
... 1. The parallelogram law for the addition of forces: This states that two forces acting on a particle may be replaced by a single force , called their resultant, obtained by drawing the diagonal of the parallelogram which has sides equal to the given forces. 2. The principles of transmissibility: Th ...
... 1. The parallelogram law for the addition of forces: This states that two forces acting on a particle may be replaced by a single force , called their resultant, obtained by drawing the diagonal of the parallelogram which has sides equal to the given forces. 2. The principles of transmissibility: Th ...
Summary of Newton`s Laws
... When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subje ...
... When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subje ...
Objects in Motion
... Predict – Consequences that can be observed if hypothesis is correct. Test Predictions – Conduct experiments and make observations to see if predicted consequences are ...
... Predict – Consequences that can be observed if hypothesis is correct. Test Predictions – Conduct experiments and make observations to see if predicted consequences are ...
Lecture 4
... – Any force vector can be replaced by its component vectors, all acting at the same point – Any number of forces acting at the same point can be replaced by a single Resultant Force equal to the vector sum of the individual forces. ...
... – Any force vector can be replaced by its component vectors, all acting at the same point – Any number of forces acting at the same point can be replaced by a single Resultant Force equal to the vector sum of the individual forces. ...
File - Flipped Out Science with Mrs. Thomas!
... to stay at rest and an object in motion tends to stay in motion, unless acted upon by an unbalanced force. • A car will tend to either keep standing still or keep moving in a straight line at the same speed unless some unbalanced force makes it do otherwise. • Examples of unbalanced forces are air r ...
... to stay at rest and an object in motion tends to stay in motion, unless acted upon by an unbalanced force. • A car will tend to either keep standing still or keep moving in a straight line at the same speed unless some unbalanced force makes it do otherwise. • Examples of unbalanced forces are air r ...
Chapter I: Concepts of Motion
... uniform velocity along a straight line if and only if the net force on the object is zero” This is popularly known as Newton’s First Law ...
... uniform velocity along a straight line if and only if the net force on the object is zero” This is popularly known as Newton’s First Law ...
Sample Questions
... B) the shortest distance from the axis of rotation to the line of action of the force C) the perpendicular distance from the fulcrum to the line of action of the force D) two of the above are true E) none of the above are true Answer: D 7. Which of the following statements regarding levers are true ...
... B) the shortest distance from the axis of rotation to the line of action of the force C) the perpendicular distance from the fulcrum to the line of action of the force D) two of the above are true E) none of the above are true Answer: D 7. Which of the following statements regarding levers are true ...
Newton’s Laws of Motion and Gravity
... • If you throw a softball and a baseball as hard as you can, why don’t they have the same speed? • The difference is due to their masses. • Mass is the amount of matter in an object. ...
... • If you throw a softball and a baseball as hard as you can, why don’t they have the same speed? • The difference is due to their masses. • Mass is the amount of matter in an object. ...
Topic 2_4_Ext A__Newton`s Law of Gravitation
... The value of the universal gravitational constant G was considerably more difficult to find. In 1798, an experimental physicist by the name of Henry Cavendish performed a very delicate experiment to determine G. Even Newton did not know the value of G. Finally, knowing the value of freefall accel ...
... The value of the universal gravitational constant G was considerably more difficult to find. In 1798, an experimental physicist by the name of Henry Cavendish performed a very delicate experiment to determine G. Even Newton did not know the value of G. Finally, knowing the value of freefall accel ...
Newton`s Laws of Motion
... scientist and mathematician famous for his discovery of the law of gravity also discovered the three laws of motion. He published them in his book Philosophiae Naturalis Principia Mathematica (mathematic principles of natural philosophy) in 1687. Today these laws are known as Newton’s Laws of Motion ...
... scientist and mathematician famous for his discovery of the law of gravity also discovered the three laws of motion. He published them in his book Philosophiae Naturalis Principia Mathematica (mathematic principles of natural philosophy) in 1687. Today these laws are known as Newton’s Laws of Motion ...
Review 3 - Physics and Astronomy
... • Speed, velocity, acceleration, force, inertia, mass, balanced and unbalanced forces • F= ma ...
... • Speed, velocity, acceleration, force, inertia, mass, balanced and unbalanced forces • F= ma ...
Chapter 10.3-10.5
... • Why is Newton’s 1st law of motion sometimes called the law of intertia? – Inertia is a measure of an object’s tendency to resist a change in its motion. • Use what you know about inertia to explain why you feel pressed back into the seat of a car when it accelerates? – Because of your inertia, you ...
... • Why is Newton’s 1st law of motion sometimes called the law of intertia? – Inertia is a measure of an object’s tendency to resist a change in its motion. • Use what you know about inertia to explain why you feel pressed back into the seat of a car when it accelerates? – Because of your inertia, you ...
Ch.4 Forces
... Forces - vector quantity that changes the velocity vector of an object. When you hit a baseball, the velocity of the ball changes. Can be a push or a pull on an object Contact forces – result from physical contact with an object (pulling a trailer, friction forces, normal force) Field forces – inter ...
... Forces - vector quantity that changes the velocity vector of an object. When you hit a baseball, the velocity of the ball changes. Can be a push or a pull on an object Contact forces – result from physical contact with an object (pulling a trailer, friction forces, normal force) Field forces – inter ...
Newton`s Three Laws
... • The force on the apple is large compared to the small mass of an apple. • Therefore, the apple accelerates with a big acceleration I’m so little I have large acceleration! ...
... • The force on the apple is large compared to the small mass of an apple. • Therefore, the apple accelerates with a big acceleration I’m so little I have large acceleration! ...
notebook- Universal Gravitation
... What we want to know… What is Newton’s Law of Universal Gravitation? How does distance affect gravitational force between two objects? What is weight and how can something appear weightless? What are Kepler’s Laws of Planetary Motion? ...
... What we want to know… What is Newton’s Law of Universal Gravitation? How does distance affect gravitational force between two objects? What is weight and how can something appear weightless? What are Kepler’s Laws of Planetary Motion? ...
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.