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Unformatted text preview: PHYS 1111,Section 5, Fall 2009
Test no. 4
December 3, 2009
2:00pm - 3:15pm NOTE: TIIis fest consists of 2() multiple choice problems. 18 of theproblems ure re¥uiret!, while the exhu .2
urefor bonus points. Fill in your nume, Student m, und unswers on the scunhon sheet. You mil)' Keepthe
problem sheet when you urefinished. An e¥uunon sheet uppeurs on the lustpUKe.
TRUE/FALSE. Choose 'True' if the statement is true and 'False' if the statement is false.
1) Rolling without slipping depends on static fri~n hne1"c Jnc.1i V)
rll'V 10 S/rJ,nb - B) False between the rolling object and the ground. 1) A IJlfJ.lJ d 2) Sound waves in air are transverse waves. '\ "fheiJ A) True ~"f e. L dV'/a ; -I udi YI't ( MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
FIGURE 1 A mass is attached to one end of a string. The other end of the string is attached to a rigid support. The mass is
released at A and swings in a vertical arc to points B, C, and 0, as shown in Figure 1. Neglect air resistance and useg
= 10 m/s2.
3) Refer to Figure 1. At what point does the mass have the most potential energy? 3) @
E) none of the given points
4) A man is holding an 8.00-kg vacuum cleaner at arm's length, a distance of 0.550 m from his
What is the torque on the shoulder joint if the arm is horizontal?
~3.2Nm mUSNm C)ONm
D) 4.40 Nm
E) 0.242 Nm ~ C :::- mo l.( I \ /tl - I ) r. .::JkiJ)l"/<3 ~ .s 1 L ~ .)
'l'[0 l N'f1 WlJ
.::::- tI 3 lO,550 I 4)~ A ...
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