previous 5 of 7 next Problem 11.46-Copy Part A In the laboratory, a student stud
ID: 1776863 • Letter: P
Question
previous 5 of 7 next Problem 11.46-Copy Part A In the laboratory, a student studles a pendulum by graphing the angle that the string makes with the vertical as a function of time t obtaining the graph shown in the figure (Eigure 1) What is the period of the pendulum's motion? Express your answer in seconds to one decimal place. Submit My Answers Give Up Part B What is the frequency of the pendulum's motion? Figure 1 of 1 Express your answer in hertz to three significant figures. (degree) Hz Submit My Answers Givc Up r(s) 1.0 3.0 Part C -6 What is the amplitude of the pendulum's motion? Express your answer in degrees to one decimal place.Explanation / Answer
a) time period of pendulum
T = 8*0.2 = 1.6 sec
b) frequency , f = 1/T = 1/1.6 = 0.625 Hz
c) amplitude = 6 degrees
d) T = 2*pi*(L/g)^0.5
=> 1.6 = 2*pi*(L/9.8)^0.5
=> length of pendulum , L = 0.632 m
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