t he expressed in words. Xaferent PE for each 1. Your love of Potential Energy c
ID: 1632076 • Letter: T
Question
t he expressed in words. Xaferent PE for each 1. Your love of Potential Energy cannot be expressed in words. You are given a particle which experiences interactions due to the potential energy graphs shown (a different PE for each problem). The only energies included in the total energy are PE and KE. You were careful to ensure you have a closed system. Orn with12hofthelabelEnergytravelingfindhheight.ticmofthefors. (a) Particle starts at 0m with 12/ of Kinetic Energy traveling to the right When the particle first reaches each of the labeled points (a,b,c), find the direction of the force, the direction the particle is moving and the KE and PE of the particle. Provide an ex planation for each answer. -6 10 x (m)Explanation / Answer
Sicne it is a closed system, we can assume that the energy with in the system is always conserved.
(a) force is directed to right
particle moving to the right
TE=PE+KE==>12 J=0+12 which means at point a PE is zero and KE=12 J
at point b , PE=3 J and KE=0 because it is a turning point and at the tip of it, velocity is momentarily zero
at point c, PE=-3 J and at the point C, the kinetic energy becomes zero momentarily and after that the velocity will start increasing making the KE non zero.
(2) The total energy is PE+KE at x=5 m, PE is -4 J, and KE=3 J which means TE=-1 J.
0 m, TE=-1, PE=2, KE=-3
2 m, TE=-1 J, PE=2 J, KE=-3J
4 m, TE=-1 J, PE=-4 J, KE=3 J
10 m TE=-1 J, PE=6J, KE=-7J
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