Ch 7 Kinetic Energy and Work
... It does not matter if the Kf and Ki are zero or not, as long as they are equal. You can lift something at constant velocity, or you can pick up a stationary object and then hold it still. ...
... It does not matter if the Kf and Ki are zero or not, as long as they are equal. You can lift something at constant velocity, or you can pick up a stationary object and then hold it still. ...
Physics trivia
... All the energy comes from the work done to pull the train of cars up the lift hill. This is stored as potential energy. That energy is then converted into motion (kinetic energy) and is eventually consumed by the non-conservative forces acting on the cars -- mostly friction from the wheels, and air ...
... All the energy comes from the work done to pull the train of cars up the lift hill. This is stored as potential energy. That energy is then converted into motion (kinetic energy) and is eventually consumed by the non-conservative forces acting on the cars -- mostly friction from the wheels, and air ...
02.Newtons_Laws
... • The Free Body Diagram is a drawing to help us visualize all of the forces acting on an object. • You will use the Free Body Diagram throughout your career in physics. • To draw an FBD: – Draw the object as a point – Draw each force on the object as a vector starting from the object. ...
... • The Free Body Diagram is a drawing to help us visualize all of the forces acting on an object. • You will use the Free Body Diagram throughout your career in physics. • To draw an FBD: – Draw the object as a point – Draw each force on the object as a vector starting from the object. ...
Law of Inertia: Hands-free driving
... moving with the same speed in different directions have different velocities. An object's acceleration is the rate at which its velocity is changing. So an object at rest and an object moving at a constant velocity both have zero acceleration. We can now say that inertia is an object's tendency to m ...
... moving with the same speed in different directions have different velocities. An object's acceleration is the rate at which its velocity is changing. So an object at rest and an object moving at a constant velocity both have zero acceleration. We can now say that inertia is an object's tendency to m ...
Hooke`s Law and SHM
... Answer the following questions (zero or maximum), using your display: During the oscillation when the mass is at the equilibrium position, what is the, a. Velocity ____________________b. Acceleration __________________ During the oscillation when the velocity of the mass is zero, what is the, a. Amp ...
... Answer the following questions (zero or maximum), using your display: During the oscillation when the mass is at the equilibrium position, what is the, a. Velocity ____________________b. Acceleration __________________ During the oscillation when the velocity of the mass is zero, what is the, a. Amp ...
Notes on Newton`s Laws of Motion
... Newton’s Second Law of Motion • “The acceleration of an object is equal to the net force acting on it divided by the object’s mass” • Acceleration = net force/mass, or a = F/m • Mass is the amount of matter in an object and stays constant • Weight is the force of gravity on an object and can change ...
... Newton’s Second Law of Motion • “The acceleration of an object is equal to the net force acting on it divided by the object’s mass” • Acceleration = net force/mass, or a = F/m • Mass is the amount of matter in an object and stays constant • Weight is the force of gravity on an object and can change ...
4.1 The Concepts of Force and Mass
... Example 9 The Moment of Inertial Depends on Where the Axis Is. Two particles each have mass and are fixed at the ends of a thin rigid rod. The length of the rod is L. Find the moment of inertia when this object rotates relative to an axis that is perpendicular to the rod at (a) one end and (b) the c ...
... Example 9 The Moment of Inertial Depends on Where the Axis Is. Two particles each have mass and are fixed at the ends of a thin rigid rod. The length of the rod is L. Find the moment of inertia when this object rotates relative to an axis that is perpendicular to the rod at (a) one end and (b) the c ...
CHAPTER 5 APPLICATIONS OF NEWTON`S LAWS • Friction ! static
... • If FGA > FGB then A wins! • If FGB > FGA then B wins! If f = µ s N for both people then the person with greater mass should win! Note that if there’s no friction (e.g., on ice) then FGA = FGB = 0 so no one wins! ...
... • If FGA > FGB then A wins! • If FGB > FGA then B wins! If f = µ s N for both people then the person with greater mass should win! Note that if there’s no friction (e.g., on ice) then FGA = FGB = 0 so no one wins! ...
ACCELERATION AND FORCE IN CIRCULAR MOTION
... usual acceleration of gravity for objects in free fall. Help: [S-7] 2d. Example 2: Rock on a String. Our second example is the case of a rock being whirled around the body at the end of a string as in Fig. 2. The string will only produce a force along its physical direction, as shown in the figure. ...
... usual acceleration of gravity for objects in free fall. Help: [S-7] 2d. Example 2: Rock on a String. Our second example is the case of a rock being whirled around the body at the end of a string as in Fig. 2. The string will only produce a force along its physical direction, as shown in the figure. ...
No Slide Title
... earth’s surface. More general: PEgravity=-GMEarthm/r PE=0 at infinity distance from the center of the earth See example 7.12 for consistency between these two. Example: escape speed: what should the minimum initial velocity of a rocket be if we want to make sure it will not fall back to earth? KEi+P ...
... earth’s surface. More general: PEgravity=-GMEarthm/r PE=0 at infinity distance from the center of the earth See example 7.12 for consistency between these two. Example: escape speed: what should the minimum initial velocity of a rocket be if we want to make sure it will not fall back to earth? KEi+P ...
Lecture09-09
... A block rests on a horizontal frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle above the horizontal, as shown in the figure. After the block is pulled through a distance of 1.50 m, its speed is 2.60 m/s, and 50.0 J of work has been done on it ...
... A block rests on a horizontal frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle above the horizontal, as shown in the figure. After the block is pulled through a distance of 1.50 m, its speed is 2.60 m/s, and 50.0 J of work has been done on it ...
chapter12
... Equilibrium implies that the object moves with both constant velocity and constant angular velocity relative to an observer in an inertial reference frame. We will deal now with the special case in which both of these velocities are equal to zero This is called static equilibrium. ...
... Equilibrium implies that the object moves with both constant velocity and constant angular velocity relative to an observer in an inertial reference frame. We will deal now with the special case in which both of these velocities are equal to zero This is called static equilibrium. ...
2 Newton`s Laws types of forces
... • two types of friction force - static friction and sliding friction. • Sliding friction results when an object slides across a surface. As an example, consider pushing a box across a floor. The floor surface offers resistance to the movement of the box. We often say that the floor exerts a friction ...
... • two types of friction force - static friction and sliding friction. • Sliding friction results when an object slides across a surface. As an example, consider pushing a box across a floor. The floor surface offers resistance to the movement of the box. We often say that the floor exerts a friction ...
Chapter 4 Motion
... object is moving, you must have a frame of reference. Your frame of reference is the moving object and a background that isn't moving. If you were at the park watching the girls on the swings, the trees and ground would help you determine that the girls were changing their position. You can tell the ...
... object is moving, you must have a frame of reference. Your frame of reference is the moving object and a background that isn't moving. If you were at the park watching the girls on the swings, the trees and ground would help you determine that the girls were changing their position. You can tell the ...
Example
... Acceleration due to gravity on the surface of Earth g = 9.81 m/s2 This number is an average and can change slightly depending on where you are on the earth (distance from the centre of the earth) All objects have the same acceleration due to gravity in a vacuum. In a vacuum where there is no ...
... Acceleration due to gravity on the surface of Earth g = 9.81 m/s2 This number is an average and can change slightly depending on where you are on the earth (distance from the centre of the earth) All objects have the same acceleration due to gravity in a vacuum. In a vacuum where there is no ...
force and motion unit
... Have you ever wondered why and how objects begin to move and why objects stop all of a sudden? An object starts to move, stops moving, or changes directions ONLY when a force acts on it. Some forces act on objects directly and some forces act on objects indirectly. For example, when you push on a do ...
... Have you ever wondered why and how objects begin to move and why objects stop all of a sudden? An object starts to move, stops moving, or changes directions ONLY when a force acts on it. Some forces act on objects directly and some forces act on objects indirectly. For example, when you push on a do ...
