PPT-Non-constant Force – spring intro. continued

Constant force gravitation near Earth Time estimates for collisions Section 2729 Q 22 b Three carts are moving on three tracks Which carts experience a net force to the left   Green. Force changes motion . Hooke’s law. Hooke’s Law = law of elasticity by Robert Hooke. Hooke’s law states that the extension produced in the spring is proportional to the force exerted. . In symbol: F = k x d. 3. Applications of Newton’s Laws in 1 dimension. Free Fall. Motion in a Fluid. Spring motion. Molecular Dynamics. Free fall. Acceleration = g = 9.8 m/s. 2. = constant. Constant acceleration implies constant force = weight. A spring is a device that stores potential energy. . When . a . spring is . stretched (or compressed), a force is applied through a . distance which means work . is done. .. The . work done goes to the spring in the . th. floor with an acceleration of 0.629 m/s. 2 . . As the elevator goes downwards, the acceleration of the elevator is 0.232m/s. 2. . Philip, who weighs 150. lbs, stands on a bathroom scale in this elevator. . True. False. A constant . non-zero net . force on an object will cause its velocity to change.. True. False. A constant non-zero net force applied to an object initially at rest will cause the object to move with . ©2009 by Goodman & Zavorotniy . The most powerful concepts in science are called 
"conservation principles". These principles allow us to 
solve problems without worrying much about the details 
of a process. . . Actual. . Work. . Definition of Work. Work on . Particle. Potential Energy. . Definition of Energy. Potential . Energy. . Kinetics . Energy. . Definition of . Energs. Work-Energy Equation. Hooke’s Law. Any spring has a natural length at which it exerts no net force on the mass . m. . . . This length, or position, is called the . equilibrium position. and is labeled . x. 0. . . If the mass is moved away from this position, in either the. the force of friction points parallel and up the ramp.. the force of friction points parallel and down the ramp.. there is no friction force since the motion is at a constant speed.. None of the above.. SI . Times:. The SI leader for PHYS 201 this spring is . Thomas . Leyden.  . His SI sessions are at the following times:. Sunday 7-8 pm MPHY 333. Tuesday 7-8 pm MPHY 333. Thursday 7-8 pm MPHY 333.  . Turn in lab from yesterday. C . Test Takers:. Go over MC. Notes/Lecture . Variable Forces. Drag Equation Derivation. B Test Takers:. MOPing. on computers . (. pick a problem area). Calculating Work a Different Way. Work is done when:. A . force . is exerted on an object. An object has a . displacement . in the same direction as the force. W=. Fdcos. q. SI unit for work is . Joule . (. J. ). 1 J = 1N*m (=0.7376 . © 2016 Pearson Education Inc.. Learning Goals for Chapter 14. D. escribe oscillations in terms of . amplitude. , . period. , . frequency. , & . angular frequency. .. A. pply . simple. . harmonic. Constant force . – gravitation (near Earth). Time estimates for collisions. Section 2.7-2.9. Q 2.2 b. Three carts are moving on three tracks. Which cart(s) experience a net force to the left?.  . Green.