HW 17 - 14.19] A mass on a string of unknown length...

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Unformatted text preview: 14.19] A mass on a string of unknown length oscillates as a pendulum with a period of 4.0 s. Parts a to d are independent questions, each referring to the initial situation. What is the period if a) The mass is'doubled? b) The string length is doubled? c) The string length is halved? d) The amplitude is doubled? ¥..V)~~7")S T-:.~S. cr.) Ti- W 2~ ,'.TG. :. \" C ~ . T;~ IV')citlp0t')da.0t <r) -:: It s. 6) Tb >H c) Tc."" n fi" J L --- {2. T"'- -:. 5.::t.s. \ {'2- T Q.. Q.'8 S 1'V')1V)~ J 14.68] On your first trip to Planet X you happen to take along a 220 g mass, a 40_CIn_ long spring, a meter stick, and a stopwatch. You're curious about the free-fall acceleration on Planet X, where ordinary tasks seem easier than on earth, but you can't find this information in your Visitor's Guide. One night you suspend the spring from the ceiling in your room and hang the mass from it. You find that the mass stretches the spring by 26.4 em. You then pull the mass down 8.10 em and release it. With the stopwatch you find that 11 oscillations take 14.0 s.Can you now satisfy your curiosity? tv) -.:2 '2.0" -l ~ '-\ a CN") T - I~f S - f\.\- f1~ \\~ ~'Y \~"') /1, ) '0~ K~l 6Y, ~ ~ -::. 'a bi ~n?-12- . -: ~ 1\1.. i - b [) t ;x ~ }\{ 2 \),'"':>'"')/52.. ...
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This note was uploaded on 08/28/2011 for the course PHYS 121 taught by Professor Angerson during the Spring '07 term at UMBC.

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HW 17 - 14.19] A mass on a string of unknown length...

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