Question

draw free body diagrams and answer questions please

Draw the free body diagram for the bob (note that the spring is not attached at this time): bobt Equilibrium Marker 2. How does spinning the bob faster affect the period (time required for 1 full revolution)? The period increases. It takes more for the bob to go around once. The period stays the same. The period decreases. It takes less time for the bob to go around once. to the centripetal force acting on the pointy bob as you spin it faster (Hint: You 3. What happens could look back on the first page to remind yourself of the formulas)? The centripetal force increases. The centripetal force stays the same. The centripetal force decreases. Draw the free body diagrams below in order to motion. compare the effects of a change in rotational speed in circular Draw a force diagram for the bob in this last activity. This diagram should represent forces acting on the bob as it is spinning at a constant speed when it is consistently passing over the pointer Draw another force diagram for the situation when the bob is spinning at a constant speed (faster than before), passing consistently farther out than the pointer is Summarize any changes that you observe. 7.2.2 Static Experiment 1. Position the apparatus so that the weight hanger can hang freely off the edge of your bench. Attach a string to the bob on the side opposite the spring and run the string over the pulley: put a weight hanger on the end of the string. Hi P 2. Add slotted weights to the weight hanger until th bottom of the bob is directly over the pointer; the threads should now be vertical. If they are not, something is wrong. 3. Record the total mass that is required such that the spring is stretched to align the pointy bob- with the metal pointer. (1Include the mass of the hanger in addition to any masses you add) 308 kg motal g = ,30 Weight mg htl 4. Draw the free body diagram of the forces acting on the bob and hanging mass in this situation. 5. Use your results from questions 3 and 4 above to determine the force, Fsic which the spring is exerting on the bob. Fasic= N 6. Which of the forces in your free body diagram were active when the bob was equilibrium marker in Activity 7.2.1? Can you think of any other forces that might have been present in Activity 7.2.1 that are not represented in your drawing? swinging above the

Answer 1

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