No Slide Title
... When you step on the gas and apply a force to speed up your car, 2 things determine how much your momentum (speed) changes ...
... When you step on the gas and apply a force to speed up your car, 2 things determine how much your momentum (speed) changes ...
13.4 Velocity & Acceleration
... A batter hits a baseball 3 ft above the ground toward the center field fence, which is 10 ft high and 400 ft from home plate. The ball leaves the bat with speed 115 ft/s at an angle of 50o above the horizontal. Is it a home run? (Does the ball clear the fence?) ...
... A batter hits a baseball 3 ft above the ground toward the center field fence, which is 10 ft high and 400 ft from home plate. The ball leaves the bat with speed 115 ft/s at an angle of 50o above the horizontal. Is it a home run? (Does the ball clear the fence?) ...
rotational inertia - Cardinal Newman High School
... • An object rotating about an axis tends to remain rotating about the same axis at the same rotational speed unless interfered with by some external influence. • The property of an object to resist changes in its rotational state of motion is called rotational inertia (symbol I). ...
... • An object rotating about an axis tends to remain rotating about the same axis at the same rotational speed unless interfered with by some external influence. • The property of an object to resist changes in its rotational state of motion is called rotational inertia (symbol I). ...
ƒ A S ƒ ƒ B
... in an inertial frame of reference—that is, either at rest or moving with constant velocity—the vector sum of forces acting on it must be zero (Newton’s first law). Free-body diagrams are essential in identifying the forces that act on the body being considered. Newton’s third law (action and reactio ...
... in an inertial frame of reference—that is, either at rest or moving with constant velocity—the vector sum of forces acting on it must be zero (Newton’s first law). Free-body diagrams are essential in identifying the forces that act on the body being considered. Newton’s third law (action and reactio ...
RelativityWorkbook-Teacher
... sitting still or moving at 90% the speed of light. To be make equation (3) consistent with equation (1) in notation, one should really write the classical momentum as p = m0v, but since nobody does that, we prefer equation (2) over equation (3) as the form for the relativistic momentum. Now, in look ...
... sitting still or moving at 90% the speed of light. To be make equation (3) consistent with equation (1) in notation, one should really write the classical momentum as p = m0v, but since nobody does that, we prefer equation (2) over equation (3) as the form for the relativistic momentum. Now, in look ...
Physics Ch. 7 Rotational Motion
... The object on the outside of a circle must travel the same angular displacement during the same amount of time as the object on the inside. So, the object on the outside must travel a greater distance, Δs, than the object on the inside. An object farther from the axis must travel at a higher ta ...
... The object on the outside of a circle must travel the same angular displacement during the same amount of time as the object on the inside. So, the object on the outside must travel a greater distance, Δs, than the object on the inside. An object farther from the axis must travel at a higher ta ...
Newtonian mechanics problem solving
... 1. Complete a data table with the information given. 2. Draw an accurate, labeled diagram locating all of the forces acting on the system. 3. If a net external force acts on the object(s), then the momentum of the system will change. Determine the magnitude and direction of the net force. 4. Apply t ...
... 1. Complete a data table with the information given. 2. Draw an accurate, labeled diagram locating all of the forces acting on the system. 3. If a net external force acts on the object(s), then the momentum of the system will change. Determine the magnitude and direction of the net force. 4. Apply t ...
Review 2012
... a. TRUE- Momentum is a vector quantity. Like all vector quantities, the momentum of an object is not fully described until the direction of the momentum is identified. Momentum, like other vector quantities, is subject to the rules of vector operations. b. FALSE- The Joule is the unit of work and en ...
... a. TRUE- Momentum is a vector quantity. Like all vector quantities, the momentum of an object is not fully described until the direction of the momentum is identified. Momentum, like other vector quantities, is subject to the rules of vector operations. b. FALSE- The Joule is the unit of work and en ...
Q1. A car with a mass of 1.20×103 kg travelling to the right at a
... In Figure 3, two particles, each with mass m = 0.85 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.6 cm and mass M = 1.2 kg. The combination rotates around the axis at point O with an angular speed = 0.35 rad/s. Find the total kinetic energy o ...
... In Figure 3, two particles, each with mass m = 0.85 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.6 cm and mass M = 1.2 kg. The combination rotates around the axis at point O with an angular speed = 0.35 rad/s. Find the total kinetic energy o ...
Relativistic angular momentum
""Angular momentum tensor"" redirects to here.In physics, relativistic angular momentum refers to the mathematical formalisms and physical concepts that define angular momentum in special relativity (SR) and general relativity (GR). The relativistic quantity is subtly different from the three-dimensional quantity in classical mechanics.Angular momentum is a dynamical quantity derived from position and momentum, and is important; angular momentum is a measure of an object's ""amount of rotational motion"" and resistance to stop rotating. Also, in the same way momentum conservation corresponds to translational symmetry, angular momentum conservation corresponds to rotational symmetry – the connection between symmetries and conservation laws is made by Noether's theorem. While these concepts were originally discovered in classical mechanics – they are also true and significant in special and general relativity. In terms of abstract algebra; the invariance of angular momentum, four-momentum, and other symmetries in spacetime, are described by the Poincaré group and Lorentz group.Physical quantities which remain separate in classical physics are naturally combined in SR and GR by enforcing the postulates of relativity, an appealing characteristic. Most notably; space and time coordinates combine into the four-position, and energy and momentum combine into the four-momentum. These four-vectors depend on the frame of reference used, and change under Lorentz transformations to other inertial frames or accelerated frames.Relativistic angular momentum is less obvious. The classical definition of angular momentum is the cross product of position x with momentum p to obtain a pseudovector x×p, or alternatively as the exterior product to obtain a second order antisymmetric tensor x∧p. What does this combine with, if anything? There is another vector quantity not often discussed – it is the time-varying moment of mass (not the moment of inertia) related to the boost of the centre of mass of the system, and this combines with the classical angular momentum to form an antisymmetric tensor of second order. For rotating mass–energy distributions (such as gyroscopes, planets, stars, and black holes) instead of point-like particles, the angular momentum tensor is expressed in terms of the stress–energy tensor of the rotating object.In special relativity alone, in the rest frame of a spinning object; there is an intrinsic angular momentum analogous to the ""spin"" in quantum mechanics and relativistic quantum mechanics, although for an extended body rather than a point particle. In relativistic quantum mechanics, elementary particles have spin and this is an additional contribution to the orbital angular momentum operator, yielding the total angular momentum tensor operator. In any case, the intrinsic ""spin"" addition to the orbital angular momentum of an object can be expressed in terms of the Pauli–Lubanski pseudovector.