Hand in this sheet Name INTERACTIVE LECTURE DEMONSTRATION PREDICTION SHEET-SIMPL

Question

Hand in this sheet Name INTERACTIVE LECTURE DEMONSTRATION PREDICTION SHEET-SIMPLE HARMONIC MOTION This sheet will be collected. Follow your instructor's directions. You may wrise hatever you wish on the attached Results Sheet and take it with In all cases we consider a mass hanging on a spring. The mass is started in motion by pulling it down a small distance below the equilibrium position and releasing it. The displacement is zero whenever the mass is at its equilibrium position. time The ferce on the mass is proportional to the displacement-the distance from the equilibrium point Demonstration l: Sketch your prediction of the graph of displacememt vs. time from watching the motion. Draw it on the displacement axes to the right. graph time and from watching the mmotion, predict the velocity-time and cceleration-time graphs, and sketch them on the axes to the right. When is the velocity zero? A maximum? time When is the acceleration zero? A maximum? (Are the velocity and acceleration ever zero at the same time while the mass is moving?) Demonstration From the acceleration-time graph and from watching the motion, predict the force-time graph. Sketch your prediction on the axes to the right. Compare the forex-time graph to the acceleration-time graph How are they similar? How different? Is the force ever zcro? If so, at what point in the motion? from a expression expression would exactly represent the motion? spring, and write down a would you use? What additional measurements would you need to make so that the 167

Explanation / Answer

a) Acceleration is zero when there is no change in its displacment on the graph

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