Physics 141 Mechanics Yongli Gao Lecture 4 Motion in 3-D
... • For any system, there's at least one state that the system is of the lowest potential energy. This is a point of stable equilibrium, or the bottom of the valley in a potential vs. position curve. • If the system is of a small displacement from the point, it'll experience a restoring force, pointin ...
... • For any system, there's at least one state that the system is of the lowest potential energy. This is a point of stable equilibrium, or the bottom of the valley in a potential vs. position curve. • If the system is of a small displacement from the point, it'll experience a restoring force, pointin ...
Force and Motion
... Tension is the force in a string. Its direction depends on what it acts on. Normal reaction is the force acting on an object by the surface in contact with the object. It is always perpendicular to the surface. Friction arises whenever an object slides or tends to slide over another object. It alway ...
... Tension is the force in a string. Its direction depends on what it acts on. Normal reaction is the force acting on an object by the surface in contact with the object. It is always perpendicular to the surface. Friction arises whenever an object slides or tends to slide over another object. It alway ...
Normal Force
... a moving object, it will continue to move with constant speed in a straight line Inertial reference frames Galilean principle of relativity: Laws of physics (and everything in the Universe) look the same for all observers who move with a constant velocity with respect to each other. ...
... a moving object, it will continue to move with constant speed in a straight line Inertial reference frames Galilean principle of relativity: Laws of physics (and everything in the Universe) look the same for all observers who move with a constant velocity with respect to each other. ...
![1. [10 Marks] A train moving with speed V crosses a platform of](http://s1.studyres.com/store/data/017625733_1-6e0bc8153bea0706382bf180fbc2a656-300x300.png)
Le mouvement et les types de forces
... g) The unit of measurement of force is the ________________________ (N). This unit corresponds to the force required to make a one-kilogram object ...
... g) The unit of measurement of force is the ________________________ (N). This unit corresponds to the force required to make a one-kilogram object ...
Document
... Definition of “Mechanics” Science concerned with the motion of bodies under the action of forces, including the special case in which a body remains at rest. Of first concern in the problem of motion are the forces that bodies exert on one another. This leads to the study of such topics as gravitati ...
... Definition of “Mechanics” Science concerned with the motion of bodies under the action of forces, including the special case in which a body remains at rest. Of first concern in the problem of motion are the forces that bodies exert on one another. This leads to the study of such topics as gravitati ...
According to Newton`s ______ law, an object with no net force
... 12. (P2.2B) A car is accelerating at a rate of 5 m/s2, if its initial velocity is 6 m/s, what is its velocity after 4 s? 13. (P2.2B) A ball is dropped from rest from a high building. What is the ball’s velocity after 3 s? (Ignore air resistance). 14. (P2.2C) Draw a velocity time graph of a ball that ...
... 12. (P2.2B) A car is accelerating at a rate of 5 m/s2, if its initial velocity is 6 m/s, what is its velocity after 4 s? 13. (P2.2B) A ball is dropped from rest from a high building. What is the ball’s velocity after 3 s? (Ignore air resistance). 14. (P2.2C) Draw a velocity time graph of a ball that ...
Document
... for every action force there has to be a reaction force that is equal in strength and opposite in direction. Action and reaction forces act on different objects, not on the same object. ...
... for every action force there has to be a reaction force that is equal in strength and opposite in direction. Action and reaction forces act on different objects, not on the same object. ...
11SD3 P2a revision notes Miss O`Neill file
... When an object is dropped: • It will accelerate due to the force of gravity • It will then fall as fast as the force of friction around it = terminal velocity • Terminal velocity = steady speed. • The acceleration of the falling object then __________ as it falls. This is because the drag (air resis ...
... When an object is dropped: • It will accelerate due to the force of gravity • It will then fall as fast as the force of friction around it = terminal velocity • Terminal velocity = steady speed. • The acceleration of the falling object then __________ as it falls. This is because the drag (air resis ...
What is Newton`s Second Law of Motion? http://www.glencoe.com
... Force is a push or pull on an object. Net force is the difference between two opposing forces. Newton's second law of motion states that if a net force acts on an object, the object will accelerate in the direction of the force. Acceleration is a change in velocity. It can be either positive (speedi ...
... Force is a push or pull on an object. Net force is the difference between two opposing forces. Newton's second law of motion states that if a net force acts on an object, the object will accelerate in the direction of the force. Acceleration is a change in velocity. It can be either positive (speedi ...
File jeopardy_review_ch_4
... Choose a category. You will be given the answer. You must give the correct question. Click to begin. ...
... Choose a category. You will be given the answer. You must give the correct question. Click to begin. ...
Lecture6
... coefficient of kinetic friction is 0.15. For each case: What is the frictional force opposing his efforts? What is the acceleration of the child? f=59 N, a=3.80 m/s2 ...
... coefficient of kinetic friction is 0.15. For each case: What is the frictional force opposing his efforts? What is the acceleration of the child? f=59 N, a=3.80 m/s2 ...
PHYSICS 231 INTRODUCTORY PHYSICS I Lecture 6
... Work of (kinetic) frictional force is always < 0. -> It removes mechanical energy from system. ...
... Work of (kinetic) frictional force is always < 0. -> It removes mechanical energy from system. ...
PPTX - University of Toronto Physics
... • Gravity is always attractive, and acts between any two objects. • Electromagnetism causes repulsion and attraction between charged particles, such as the protons and electrons in matter. This gives rise to almost all of the forces we deal with in PHY131/132: Normal, Tension, etc. • Weak and Strong ...
... • Gravity is always attractive, and acts between any two objects. • Electromagnetism causes repulsion and attraction between charged particles, such as the protons and electrons in matter. This gives rise to almost all of the forces we deal with in PHY131/132: Normal, Tension, etc. • Weak and Strong ...
File
... Acceleration: •a change in velocity •a measurement of how quickly an object is changing speed, direction or both Velocity: The rate of change of a position along a straight line with respect to time Force: strength or energy ...
... Acceleration: •a change in velocity •a measurement of how quickly an object is changing speed, direction or both Velocity: The rate of change of a position along a straight line with respect to time Force: strength or energy ...
Document
... Where gravity is concerned this point is always through the center of gravity. For muscular force, this point is assumed to be the muscle’s attachment to a bony lever. The point of intersection of the line of force and the mechanical axis of the ...
... Where gravity is concerned this point is always through the center of gravity. For muscular force, this point is assumed to be the muscle’s attachment to a bony lever. The point of intersection of the line of force and the mechanical axis of the ...
Kinetic Energy and Work
... We can use the equation above to define the SI unit for work (the joule, symbol: J ). An object of mass m = 1kg that moves with speed v = 1 m/s has a kinetic energy K = 1J. Work: (symbol W) If a force F is applied to an object of mass m it can accelerate it and increase its speed v and kinetic energ ...
... We can use the equation above to define the SI unit for work (the joule, symbol: J ). An object of mass m = 1kg that moves with speed v = 1 m/s has a kinetic energy K = 1J. Work: (symbol W) If a force F is applied to an object of mass m it can accelerate it and increase its speed v and kinetic energ ...
Classical central-force problem
In classical mechanics, the central-force problem is to determine the motion of a particle under the influence of a single central force. A central force is a force that points from the particle directly towards (or directly away from) a fixed point in space, the center, and whose magnitude only depends on the distance of the object to the center. In many important cases, the problem can be solved analytically, i.e., in terms of well-studied functions such as trigonometric functions.The solution of this problem is important to classical physics, since many naturally occurring forces are central. Examples include gravity and electromagnetism as described by Newton's law of universal gravitation and Coulomb's law, respectively. The problem is also important because some more complicated problems in classical physics (such as the two-body problem with forces along the line connecting the two bodies) can be reduced to a central-force problem. Finally, the solution to the central-force problem often makes a good initial approximation of the true motion, as in calculating the motion of the planets in the Solar System.