Question

PS-5 Written Problems (50 points) - Tutorial: Conservation of energy with energy bar charts Name Work done by a constant force: W = .d = Fd cose W = Fparalleld Helpful Equations: mgh = U,Gravitational potential energy kx? = Us - Elastic potential energy mv2 = KE - Kinetic Energy 1. Using energy bar charts for conservation of energy problems Bar charts are conceptual tools that represent conservation of energy. • A vertical bar is used to represent the amount of each type of energy (kinetic, gravitational potential and elastic potential energy) that the object possesses. • This is done for both the initial and final situations. Work done by the force of friction and work done by all other forces as the object moves from the initial to the final situation are also represented by vertical bars. A Little Timmy is playing with his ABC baby blocks and, being the baby that he is, angrily kicks one of them, causing it to slide across a hardwood floor (not frictionless). Draw a diagram of the initial and final positions of the puck after being kicked and describe its motion (assume that it will not hit any other object). On the right, draw a free body diagram for the block during Diagram of initial and final positions + FBD Motion description

Answer 1

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FBD duning motin Suiding A Fick A final fosition mg position Emngg Bars PE Ee KE ke o feo P.E nainl Wok dae by itlen funa