Procedure for lab: Find the inner and outer diameters of the rings. Use the Vern

Question

Procedure for lab:

Find the inner and outer diameters of the rings. Use the Vernier calipers for the smaller rings and the meter stick for the larger rings.

Clamp the knife edge to the edge of the table. Make at least two measurements of the time it takes for 20 oscillations of each ring. If the times are not close, take more data until you have two times that are within 0.2 s of each other. Be sure the displacement from equilibrium is small in each case. The smallest ring is very frustrating to time; save it for last if possible.

Set up the pendulum clamp so that it is at least 1.6 m above the floor.

Use the second and third clamps to secure the ends of the string. Securing the string this way prevents it from precessing as you take data. Measure the distance l from the bottom of the support between the two clamps to the center of mass of the weight.

Use at least eight lengths of the string. Get the widest range of lengths possible, from about 0.20 m to 1.50 m. Again, be sure the displacement of the pendulum is very small. For each length measure the time for twenty cycles.

Put all your equipment away and be sure your instructor signs your notebook

1. Why should your log slopes have equaled one half?

2. Suppose you had consistently measured the length l wrong so that your value was 1 cm greater than the actual value. How would the slope and intercept have been affected? Explain your reasoning.

3. Suppose that your rings had thick rims so that the difference between Ri and Ro was considerable. Let ?R(delta R) = Ro - Ri . Then

Complete the algebra and show that the period for a thick ring would be

4. Which of the five rings in this experiment was most likely to have a big difference between its theoretical and actual period? How would this difference have affected your calculations for g? Explain your reasoning. (Big Hint: Look at the answer to question 3.)

Explanation / Answer

this link might be help to u...

http://www.phy-astr.gsu.edu/butler/labs/physics2211/8Pendula2211.pdf

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.