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### Q#3(W06)B

Course: PHYS 312, Fall 2009
School: RIT
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Word Count: 342

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312 SPSP Quiz #3 01/11/07 (1) Proper units for strain are (a) m (b) N (c) N/m2 (d) (Pa)-1 (e) none of the above (2) A vertical string is used to support a uniform rod of weight W that is hinged at the wall, as shown. If I move the point that the string attaches to the rod inward toward the CM of the rod, (keeping the string vertical) what happens to the tension? (a) it remains the same (b) it increases (c) it...

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312 SPSP Quiz #3 01/11/07 (1) Proper units for strain are (a) m (b) N (c) N/m2 (d) (Pa)-1 (e) none of the above (2) A vertical string is used to support a uniform rod of weight W that is hinged at the wall, as shown. If I move the point that the string attaches to the rod inward toward the CM of the rod, (keeping the string vertical) what happens to the tension? (a) it remains the same (b) it increases (c) it decreases (d) none of the above . (3) As the location of the string is moved as in Question #2, what happens to the force that the hinge exerts on the rod? (a) it remains the same (b) it increases (c) it decreases (d) none of the above. (4) What is the angular momentum (measured about the origin) of the indicated object? The object lies 2m from the origin, its mass is 10 kg and its speed is 5 m/sec. (a) 50 kg m/sec (b) 100kgm2/sec (c) 100kgm2/sec i (d) -100kgm2/sec i (e) 100kgm2/sec k (f) -100kgm2/sec j (g) none of the above (5) Suddenly, the size of a rotating uniform (isolated) spherical object collapses to half its former size, its mass remaining constant. What happens to the angular momentum of the object? (a) it quadruples (b) it doubles (c) it remains the same (d) it is halved (e) none of the above. (6) In the situation in Q#5, what happens to the kinetic energy of the object? (a) it quadruples (b) it doubles (c) it remains the same (d) it is halved (e) none of the above. True or False? (7) A large value of Young's Modulus means that a material can undergo a large uniaxial strain without failing. (8) In order to apply the...

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%!PS-Adobe-2.0 %Creator: dvipsk 5.58f Copyright 1986, 1994 Radical Eye Software %Title: ph8436.dvi %Pages: 4 %PageOrder: Ascend %BoundingBox: 0 0 612 792 %EndComments %DVIPSCommandLine: /usr/local/TeX/bin/dvi2ps -o ph8436.ps ph8436.dvi %DVIPSParamete
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1?ymonoce eht gnitcapmi morf 'skcohs ytivitcudorp` tneverp wohemos ot tnemnrevog eht rof )elbarised e b ti dluow ,os fi dna( elbisaef eb ti dluoW ?etautcufl ot raeppa ytivitcudorp seod ,weiv ruoy ni ,yhW .]skraM 01[ .2.selbairav suonegodne fo tes
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