# Uniform Circular Motion: Centripetal Force

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Experiment No. 1

Experiment No. 11

Uniform Circular Motion: Centripetal Force[pic 2]

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SCORE

Villapa, Arvin C.

(SURNAME, GIVEN NAME, M.I.)

BSITWMA – 1                                                PHYS101L – W01                [pic 4]

(COURSE AND YEAR)                                           (SUBJECT CODE AND SECTION)[pic 5][pic 6]

20121137                                                        April 1, 2013

(STUDENT NO.)                                               (DATE OF PERFORMANCE)[pic 7][pic 8]

4                                                        April 8, 2013                [pic 9]

(GROUP NO.)                                                 (DATE OF SUBMISSION)[pic 10]

SUBMITTED TO:

Ms. MARIA CRISELLA PELAEZ, MSCE

Instructor

1. OBJECTIVES

1. To determine the relationship of centripetal force and the frequency, radius, and mass of a rotating object.
1. MATERIALS
 QUANTITY ITEM 3 Rubber Stopper 1 Paper Clip 1 Meter Stick 3 Weights (one 20-g and two 50-g) 1 Hollow Cylinder with Smooth Ends 1 1.0-m long string 1 Stopwatch 1 Balance beam

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1. SET-UP/DIAGRAMS/ILLUSTRATIONS

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1. DATA AND RESULTS

 Table 1 Trial 1 Trial 2 Trial 3 No. of weights 2 3 4 Massweight, mweights Kg .015 .035 .085 Time, t S 6.00 5.92 5.81 Frequency, f Hz 1.67 1.69 1.72 Frequency squared, f2 Hz2 2.79 2.86 2.96 Theoretical centripetal force, Fc theoretical N .147 .343 .833 Experimental centripetal force, Fcexperimental N .826 1.976 4.966 % error % 82.20 82.64 83.23

 Table 2 Trial 1 Trial 2 Trial 3 Radius, r M .15 .30 .45 Time, t S 4.94 5.51 5.90 Frequency, f Hz 2.02 1.81 1.69 Frequency squared, f2 Hz2 4.08 3.28 2.86 Theoretical centripetal force, Fc theoretical N 0.539 Experimental centripetal force, Fcexperimental N 1.33 2.14 2.79 Average experimental centripetal force N 2.09 % error % 74.21

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