Chapter 2 KINETICS OF PARTICLES: NEWTON`S SECOND LAW
... normal force — the force that keeps two objects from occupying the same space static friction — a friction force between surfaces that are not slipping past each other kinetic friction — a friction force between surfaces that are slipping past each other fluid — a gas or a liquid fluid friction — a ...
... normal force — the force that keeps two objects from occupying the same space static friction — a friction force between surfaces that are not slipping past each other kinetic friction — a friction force between surfaces that are slipping past each other fluid — a gas or a liquid fluid friction — a ...
Slides - Powerpoint - University of Toronto Physics
... – Skim over the entire test from front to back before you begin. Look for problems that you have confidence to solve first. – If you start a problem but can’t finish it, leave it, make a mark on the edge of the paper beside it, and come back to it after you have solved all the easy problems. • Bring ...
... – Skim over the entire test from front to back before you begin. Look for problems that you have confidence to solve first. – If you start a problem but can’t finish it, leave it, make a mark on the edge of the paper beside it, and come back to it after you have solved all the easy problems. • Bring ...
L9 - University of Iowa Physics
... between it and the dash, otherwise it moves in a straight line • The car actually slides out from under the object • the apparent outward force (as seen by someone in the car) is called the centrifugal force • it is NOT A REAL force! It is a fictitious force • an object will not move in a circle ...
... between it and the dash, otherwise it moves in a straight line • The car actually slides out from under the object • the apparent outward force (as seen by someone in the car) is called the centrifugal force • it is NOT A REAL force! It is a fictitious force • an object will not move in a circle ...
Abstract - UChicago High Energy Physics
... (BAU) remains one of the greatest puzzles of cosmology. As was pointed out by Sakharov, any model that explains BAU has to satisfy three conditions: (1) baryon number non-conservation, (2) C and CP violations, and (3) departure from thermal equilibrium [1]. In fact, many of the early Universe proble ...
... (BAU) remains one of the greatest puzzles of cosmology. As was pointed out by Sakharov, any model that explains BAU has to satisfy three conditions: (1) baryon number non-conservation, (2) C and CP violations, and (3) departure from thermal equilibrium [1]. In fact, many of the early Universe proble ...
Unit 1 Problem Set
... 3. A boat moves through the water with two forces acting on it. One is a 2000-N forward push by the water on the propeller, and the other is an 1800-N resistive force due to the water around the bow. (a) What is the acceleration of the 1000-kg boat? (b) If it starts from rest, how far will it move i ...
... 3. A boat moves through the water with two forces acting on it. One is a 2000-N forward push by the water on the propeller, and the other is an 1800-N resistive force due to the water around the bow. (a) What is the acceleration of the 1000-kg boat? (b) If it starts from rest, how far will it move i ...
PY1052 Problem Set 3 – Autumn 2004 Solutions
... mass of 4.5 kg. The coefficient of static friction between A and the table is µs = 0.20, and the corresponding coefficient of kinetic friction is µ k = 0.15. (a) Does the block move? What is the friction force felt by the block? Now a force F2 = 25 N is exerted horizontally on block A. (b) What is t ...
... mass of 4.5 kg. The coefficient of static friction between A and the table is µs = 0.20, and the corresponding coefficient of kinetic friction is µ k = 0.15. (a) Does the block move? What is the friction force felt by the block? Now a force F2 = 25 N is exerted horizontally on block A. (b) What is t ...
FanCartPhysicsSE-1
... 2. Suppose several more horses were hitched up to the same cart. How would this affect the speed of the cart? __________________________________________________ Although these questions may seem simple, they form the basis of Newton’s second law of motion. The Fan Cart Physics Gizmo™ can be used to ...
... 2. Suppose several more horses were hitched up to the same cart. How would this affect the speed of the cart? __________________________________________________ Although these questions may seem simple, they form the basis of Newton’s second law of motion. The Fan Cart Physics Gizmo™ can be used to ...
Angular_Momentum
... • F·r is the torque exerted on a particle at radius ‘ r’ We may take the sum of both sides over i particles to get ...
... • F·r is the torque exerted on a particle at radius ‘ r’ We may take the sum of both sides over i particles to get ...
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.