Simple Harmonic Motion
... 1989M3. A 2-kilogram block is dropped from a height of 0.45 m above an uncompressed spring, as shown above. The spring has an elastic constant of 200 N per meter and negligible mass. The block strikes the end of the spring and sticks to it. a. Determine the speed of the block at the instant it hits ...
... 1989M3. A 2-kilogram block is dropped from a height of 0.45 m above an uncompressed spring, as shown above. The spring has an elastic constant of 200 N per meter and negligible mass. The block strikes the end of the spring and sticks to it. a. Determine the speed of the block at the instant it hits ...
Impulse Momentum PowerPoint
... Having a net force is not enough to cause a change in the motion of an object. It must be present for some time. A huge force acting for zero seconds accomplishes nothing. A small force acting for a long time can be as effective as a huge force acting for a short time. ...
... Having a net force is not enough to cause a change in the motion of an object. It must be present for some time. A huge force acting for zero seconds accomplishes nothing. A small force acting for a long time can be as effective as a huge force acting for a short time. ...
Chapter 8
... Objects tend to stay in motion, or at rest, unless acted upon by a net force. • Notice it says Motion, but does not specify whether the motion is linear or rotational. • We also said that Newton’s 1st Law describes the term inertia, or the the resistance of a change in motion. • The tendency of a bo ...
... Objects tend to stay in motion, or at rest, unless acted upon by a net force. • Notice it says Motion, but does not specify whether the motion is linear or rotational. • We also said that Newton’s 1st Law describes the term inertia, or the the resistance of a change in motion. • The tendency of a bo ...
4. Motion, Energy, and Gravity
... same rate (not counting friction of air resistance). • On Earth, g ≈ 10 m/s2: speed increases 10 m/s with each second of falling. ...
... same rate (not counting friction of air resistance). • On Earth, g ≈ 10 m/s2: speed increases 10 m/s with each second of falling. ...
Lec9
... between the collar and the rod if the collar is not to slide when (a) q = 90o, (b) q = 75o, (c) q = 45o. Indicate in each case the direction of the impending motion. ...
... between the collar and the rod if the collar is not to slide when (a) q = 90o, (b) q = 75o, (c) q = 45o. Indicate in each case the direction of the impending motion. ...
F - Cloudfront.net
... • A massless string is wrapped 10 times around a disk of mass M = 40 g and radius R = 10 cm. The disk is constrained to rotate without friction about a fixed axis though its center. The string is pulled with a force F = 10 N until it has unwound. (Assume the string does not slip, and that the disk i ...
... • A massless string is wrapped 10 times around a disk of mass M = 40 g and radius R = 10 cm. The disk is constrained to rotate without friction about a fixed axis though its center. The string is pulled with a force F = 10 N until it has unwound. (Assume the string does not slip, and that the disk i ...
Motion in Two Dimensions
... 1) A car with a mass of 1250 kg rounds a curve where the coefficient of friction is measured to be .185. If the radius of the curve is 195 m, what speed must the car be traveling? 2) A student spins a 15.0 g rubber stopper above his head from a .750 m string. The tension in the string is measured t ...
... 1) A car with a mass of 1250 kg rounds a curve where the coefficient of friction is measured to be .185. If the radius of the curve is 195 m, what speed must the car be traveling? 2) A student spins a 15.0 g rubber stopper above his head from a .750 m string. The tension in the string is measured t ...
Vector Mechanics for Engineers: Dynamics
... equilibrium may be applied, e.g., coplanar forces may be represented with a closed vector polygon. • Inertia vectors are often called inertial forces as they measure the resistance that particles offer to changes in motion, i.e., changes in speed or direction. • Inertial forces may be conceptually u ...
... equilibrium may be applied, e.g., coplanar forces may be represented with a closed vector polygon. • Inertia vectors are often called inertial forces as they measure the resistance that particles offer to changes in motion, i.e., changes in speed or direction. • Inertial forces may be conceptually u ...
Physics 101 Fall 02 - Youngstown State University
... Two kids of equal masses are seated at positions A and B on a merry-go-round rotating uniformly. Compare these quantities for the two kids: 1. Angular displacement (D) 2. Angular velocity (w) 3. Linear velocity (v) ...
... Two kids of equal masses are seated at positions A and B on a merry-go-round rotating uniformly. Compare these quantities for the two kids: 1. Angular displacement (D) 2. Angular velocity (w) 3. Linear velocity (v) ...
Chapter 10 (Read Please)
... We can associate the angle q with the entire rigid object as well as with an individual particle. Remember every particle on the object rotates through the same angle. The angular position of the rigid object is the angle q between the reference line on the object and the fixed reference line in s ...
... We can associate the angle q with the entire rigid object as well as with an individual particle. Remember every particle on the object rotates through the same angle. The angular position of the rigid object is the angle q between the reference line on the object and the fixed reference line in s ...
Einstein`s E mc2
... conserved physical quantity but is not invariant. • Since mass is defined in terms of the mod of Four momentum therefor it is relativistically invariant and specifying any coordinate system for it is misleading. • In relativistic mechanics acceleration is not parallel to Newtonian force and so we ca ...
... conserved physical quantity but is not invariant. • Since mass is defined in terms of the mod of Four momentum therefor it is relativistically invariant and specifying any coordinate system for it is misleading. • In relativistic mechanics acceleration is not parallel to Newtonian force and so we ca ...
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.