Question

10. QUESTIONS: (1) Why is the mass of the bob not used in this experiment? Does its shape make any difference? Explain (2) Draw a detailed force diagram for the pendulum bob. Why does the angle have to be kept small? Is it a matter of air resistance or is there any other reason? 6. GENERAL INSTRUCTIONS: Set up a system of rods and clamps so that the pendulums string is tied to a clamp ceiling and the bob is about 1 cm off the floor. Make sure to tie tight knots as near the clamp and bob as possible. Use slip knots. Remove the bob and string to the floor to measure its length as accurately as possible with a meter stick. If you have large errors in this lab, you should recheck this measurement a second time and measure the length to the nearest mm. near the S Notice that the mass of the bob (m) does not affect the period of the pendulum and is not necessary to know. The amplitude of the pendulum (A) should be as small as possible. The simple pendulum formula is derived for small angles of oscillation. Any amplitude larger than a few centimeters will begin to introduce errors into to the measurement of g. A

Answer 1

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