Conservation of Energy YOU CAN USE YOUR OWN DATA Submit the set-up picture! DATA SHEET &...

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Conservation of Energy YOU CAN USE YOUR OWN DATA Submit the set-up picture! DATA SHEET & QUESTIONS Distance washers are above the floor when thread is relaxed. Distance washers are above the floor when thread is pulled back. Change in height of washers. Velocity of washers in X direction when thread is cut (show calculations) Distance downrange washers will travel when thread is cut (show calculations) Did you hit the target? If not, how much did you miss it by? Show all calculations! 1. If the ruler and razor blade where removed, and the pendulum allowed to swing freely, how high would it go on the other side? 2. Where does the pendulum have the greatest potential energy? (Draw a diagram also.) 3. Where does the pendulum have the greatest kinetic energy? (Draw a diagram also.) 4. Sometimes energy is lost to friction during these conversions. If that happened here, would you expect the washers to overshoot the target or fall short? Why? 5. Some calculus-based physics students believe that the washers would continue to swing back and forth after the thread is cut. Is this what you saw? Do you believe it? Why or why not? Table Leg Ruler with razor blade taped to cut string X X marks the spot where washers will land Table Flat washers Distance washers ar above floor I Distance washers are above floor when they are not pulled back. r 2 r I Conservation of Energy YOU CAN USE YOUR OWN DATA Submit the set-up picture! DATA SHEET & QUESTIONS Distance washers are above the floor when thread is relaxed. Distance washers are above the floor when thread is pulled back. Change in height of washers. Velocity of washers in X direction when thread is cut (show calculations) Distance downrange washers will travel when thread is cut (show calculations) Did you hit the target? If not, how much did you miss it by? Show all calculations! 1. If the ruler and razor blade where removed, and the pendulum allowed to swing freely, how high would it go on the other side? 2. Where does the pendulum have the greatest potential energy? (Draw a diagram also.) 3. Where does the pendulum have the greatest kinetic energy? (Draw a diagram also.) 4. Sometimes energy is lost to friction during these conversions. If that happened here, would you expect the washers to overshoot the target or fall short? Why? 5. Some calculus-based physics students believe that the washers would continue to swing back and forth after the thread is cut. Is this what you saw? Do you believe it? Why or why not? Table Leg Ruler with razor blade taped to cut string X X marks the spot where washers will land Table Flat washers Distance washers ar above floor I Distance washers are above floor when they are not pulled back. r 2 r I