Spring 2004 - Scott Pratt- PHY 231 - Spring 2004 1 midterm3...

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Unformatted text preview: Scott Pratt- PHY 231 - Spring 2004 1 midterm3 1 pt Two wires support a beam of length L=8 m and mass 210 kg as shown in the figure above. A box of mass 140 kg hangs from a wire which hangs from the beam a distance x=6 m away from the left edge of the beam. What is the tension in the left support wire? (in N ) 1 . A 745 B 842 C 952 D 1076 E 1215 F 1373 G 1552 H 1754 1 pt A piece of moon rock reads 33.8 grams on a scale when in air, but 13.2 grams in alcohol (specific gravity = 0.79). What is the density of the moon rock in kg/m 3 ? 2 . A 1.30 × 10 3 B 1.52 × 10 3 C 1.77 × 10 3 D 2.08 × 10 3 E 2.43 × 10 3 F 2.84 × 10 3 G 3.33 × 10 3 H 3.89 × 10 3 1 pt A figure skater is spinning with her arms and one leg extended as far as she can. She then pulls them in tight to her body. As her position contracts, . her moment of inertia . 3 . A decreases B increases C remains the same . her rotational kinetic energy ....
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This note was uploaded on 04/10/2008 for the course PHY 231 taught by Professor Smith during the Spring '08 term at Michigan State University.

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Spring 2004 - Scott Pratt- PHY 231 - Spring 2004 1 midterm3...

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